68623112640 has 112 divisors (see below), whose sum is σ = 223767103392. Its totient is φ = 17804906496.

The previous prime is 68623112609. The next prime is 68623112653. The reversal of 68623112640 is 4621132686.

68623112640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930459 + ... + 1001498.

It is an arithmetic number, because the mean of its divisors is an integer number (1997920566).

Almost surely, 2^68623112640 is an apocalyptic number.

68623112640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68623112640 is an abundant number, since it is smaller than the sum of its proper divisors (155143990752).

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

68623112640 is a wasteful number, since it uses less digits than its factorization.

68623112640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932014 (or 1932004 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 68623112640 in words is "sixty-eight billion, six hundred twenty-three million, one hundred twelve thousand, six hundred forty".