68385665976 has 32 divisors (see below), whose sum is σ = 171859276800. Its totient is φ = 22675873760.

The previous prime is 68385665891. The next prime is 68385665981. The reversal of 68385665976 is 67956658386.

It is a self number, because there is not a number n which added to its sum of digits gives 68385665976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7454586 + ... + 7463753.

It is an arithmetic number, because the mean of its divisors is an integer number (5370602400).

Almost surely, 2^68385665976 is an apocalyptic number.

It is an amenable number.

68385665976 is an abundant number, since it is smaller than the sum of its proper divisors (103473610824).

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

68385665976 is a wasteful number, since it uses less digits than its factorization.

68385665976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14918539 (or 14918535 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 69.

The spelling of 68385665976 in words is "sixty-eight billion, three hundred eighty-five million, six hundred sixty-five thousand, nine hundred seventy-six".