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68998685274 = 23323175931583
BaseRepresentation
bin100000001000010100…
…1000110001001011010
320121002122012101022000
41000100221012021122
52112302130412044
651410401141430
74661565101511
oct1002051061132
9217078171260
1068998685274
1127297a60542
121145762a876
136677b69c2c
1434a7a45678
151bdc76ed69
hex1010a4625a

68998685274 has 64 divisors (see below), whose sum is σ = 160092979200. Its totient is φ = 21986377776.

The previous prime is 68998685233. The next prime is 68998685293. The reversal of 68998685274 is 47258689986.

68998685274 is a `hidden beast` number, since 6 + 8 + 9 + 98 + 6 + 8 + 527 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2168887 + ... + 2200469.

It is an arithmetic number, because the mean of its divisors is an integer number (2501452800).

Almost surely, 268998685274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68998685274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80046489600).

68998685274 is an abundant number, since it is smaller than the sum of its proper divisors (91094293926).

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

68998685274 is a wasteful number, since it uses less digits than its factorization.

68998685274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33376 (or 33370 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 72.

The spelling of 68998685274 in words is "sixty-eight billion, nine hundred ninety-eight million, six hundred eighty-five thousand, two hundred seventy-four".

Divisors: 1 2 3 6 9 18 23 27 46 54 69 138 207 414 621 1242 1759 3518 5277 10554 15831 31583 31662 40457 47493 63166 80914 94749 94986 121371 189498 242742 284247 364113 568494 726409 728226 852741 1092339 1452818 1705482 2179227 2184678 4358454 6537681 13075362 19613043 39226086 55554497 111108994 166663491 333326982 499990473 999980946 1277753431 1499971419 2555506862 2999942838 3833260293 7666520586 11499780879 22999561758 34499342637 68998685274