68593028985 has 64 divisors (see below), whose sum is σ = 133476456960. Its totient is φ = 33215235840.

The previous prime is 68593028971. The next prime is 68593029049. The reversal of 68593028985 is 58982039586.

It is not a de Polignac number, because 68593028985 - 2⁶ = 68593028921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 213309 + ... + 427418.

It is an arithmetic number, because the mean of its divisors is an integer number (2085569640).

Almost surely, 2^68593028985 is an apocalyptic number.

68593028985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68593028985 is a deficient number, since it is larger than the sum of its proper divisors (64883427975).

68593028985 is a wasteful number, since it uses less digits than its factorization.

68593028985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640815 (or 640809 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 68593028985 in words is "sixty-eight billion, five hundred ninety-three million, twenty-eight thousand, nine hundred eighty-five".