68251685812 has 12 divisors (see below), whose sum is σ = 119506415616. Its totient is φ = 34106995640.

The previous prime is 68251685807. The next prime is 68251685839. The reversal of 68251685812 is 21858615286.

It is a self number, because there is not a number n which added to its sum of digits gives 68251685812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703668 + ... + 4718155.

It is an arithmetic number, because the mean of its divisors is an integer number (9958867968).

Almost surely, 2^68251685812 is an apocalyptic number.

It is an amenable number.

68251685812 is a deficient number, since it is larger than the sum of its proper divisors (51254729804).

68251685812 is a wasteful number, since it uses less digits than its factorization.

68251685812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423638 (or 9423636 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 52.

The spelling of 68251685812 in words is "sixty-eight billion, two hundred fifty-one million, six hundred eighty-five thousand, eight hundred twelve".