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68903378718 = 2379491444697
BaseRepresentation
bin100000000101011110…
…1100001111100011110
320120211222212022021120
41000022331201330132
52112103231104333
651353114311410
74656330025026
oct1001275417436
9216758768246
1068903378718
1127249185299
121142b728566
1366611aa815
143499116a86
151bd41e5db3
hex100af61f1e

68903378718 has 16 divisors (see below), whose sum is σ = 137824189200. Its totient is φ = 22964887616.

The previous prime is 68903378717. The next prime is 68903378749. The reversal of 68903378718 is 81787330986.

It is a super-2 number, since 2×689033787182 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68903378717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674655 + ... + 770042.

It is an arithmetic number, because the mean of its divisors is an integer number (8614011825).

Almost surely, 268903378718 is an apocalyptic number.

68903378718 is an abundant number, since it is smaller than the sum of its proper divisors (68920810482).

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

68903378718 is a wasteful number, since it uses less digits than its factorization.

68903378718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452651.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 68903378718 in words is "sixty-eight billion, nine hundred three million, three hundred seventy-eight thousand, seven hundred eighteen".

Divisors: 1 2 3 6 7949 15898 23847 47694 1444697 2889394 4334091 8668182 11483896453 22967792906 34451689359 68903378718