68974688920 has 16 divisors (see below), whose sum is σ = 155193050160. Its totient is φ = 27589875552.

The previous prime is 68974688917. The next prime is 68974688987. The reversal of 68974688920 is 2988647986.

It is a super-2 number, since 2×68974688920² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862183572 + ... + 862183651.

It is an arithmetic number, because the mean of its divisors is an integer number (9699565635).

Almost surely, 2^68974688920 is an apocalyptic number.

It is an amenable number.

68974688920 is an abundant number, since it is smaller than the sum of its proper divisors (86218361240).

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

68974688920 is a wasteful number, since it uses less digits than its factorization.

68974688920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724367234 (or 1724367230 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 68974688920 in words is "sixty-eight billion, nine hundred seventy-four million, six hundred eighty-eight thousand, nine hundred twenty".