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68231330112 = 2631140978989
BaseRepresentation
bin111111100010111001…
…110111100101000000
320112010011021200220110
4333202321313211000
52104214210030422
651202310111320
74633556510451
oct774271674500
9215104250813
1068231330112
1126a33897220
121128264b540
136584ba6b1a
143433b77128
151b951e560c
hexfe2e77940

68231330112 has 112 divisors (see below), whose sum is σ = 197424446400. Its totient is φ = 20625346560.

The previous prime is 68231330107. The next prime is 68231330129. The reversal of 68231330112 is 21103313286.

It is a self number, because there is not a number n which added to its sum of digits gives 68231330112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824314 + ... + 903302.

Almost surely, 268231330112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68231330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98712223200).

68231330112 is an abundant number, since it is smaller than the sum of its proper divisors (129193116288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68231330112 is a wasteful number, since it uses less digits than its factorization.

68231330112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79424 (or 79414 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 68231330112 its reverse (21103313286), we get a palindrome (89334643398).

The spelling of 68231330112 in words is "sixty-eight billion, two hundred thirty-one million, three hundred thirty thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 64 66 88 96 132 176 192 264 352 409 528 704 818 1056 1227 1636 2112 2454 3272 4499 4908 6544 8998 9816 13088 13497 17996 19632 26176 26994 35992 39264 53988 71984 78528 78989 107976 143968 157978 215952 236967 287936 315956 431904 473934 631912 863808 868879 947868 1263824 1737758 1895736 2527648 2606637 3475516 3791472 5055296 5213274 6951032 7582944 10426548 13902064 15165888 20853096 27804128 32306501 41706192 55608256 64613002 83412384 96919503 129226004 166824768 193839006 258452008 355371511 387678012 516904016 710743022 775356024 1033808032 1066114533 1421486044 1550712048 2067616064 2132229066 2842972088 3101424096 4264458132 5685944176 6202848192 8528916264 11371888352 17057832528 22743776704 34115665056 68231330112