973157921856 has 42 divisors (see below), whose sum is σ = 2789381475582. Its totient is φ = 324385973760.

The previous prime is 973157921807. The next prime is 973157921873. The reversal of 973157921856 is 658129751379.

973157921856 is a `hidden beast` number, since 9 + 7 + 3 + 1 + 579 + 2 + 1 + 8 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 579547238400 + 393610683456 = 761280^2 + 627384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 973157921793 and 973157921802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844754565 + ... + 844755716.

Almost surely, 2^973157921856 is an apocalyptic number.

973157921856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

973157921856 is an abundant number, since it is smaller than the sum of its proper divisors (1816223553726).

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

973157921856 is a wasteful number, since it uses less digits than its factorization.

973157921856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689510299 (or 1689510286 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 63.

The spelling of 973157921856 in words is "nine hundred seventy-three billion, one hundred fifty-seven million, nine hundred twenty-one thousand, eight hundred fifty-six".