68103872040 has 64 divisors (see below), whose sum is σ = 216329952960. Its totient is φ = 17092736000.

The previous prime is 68103871951. The next prime is 68103872041. The reversal of 68103872040 is 4027830186.

It is a self number, because there is not a number n which added to its sum of digits gives 68103872040.

It is not an unprimeable number, because it can be changed into a prime (68103872041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16690086 + ... + 16694165.

It is an arithmetic number, because the mean of its divisors is an integer number (3380155515).

Almost surely, 2^68103872040 is an apocalyptic number.

68103872040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68103872040 is an abundant number, since it is smaller than the sum of its proper divisors (148226080920).

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

68103872040 is a wasteful number, since it uses less digits than its factorization.

68103872040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33384282 (or 33384278 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 68103872040 in words is "sixty-eight billion, one hundred three million, eight hundred seventy-two thousand, forty".