21957372971032 has 32 divisors (see below), whose sum is σ = 41312779045200. Its totient is φ = 10940695696000.

The previous prime is 21957372970961. The next prime is 21957372971069. The reversal of 21957372971032 is 23017927375912.

It is a super-2 number, since 2×21957372971032² (a number of 27 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 7 ways as a sum of consecutive naturals, for example, 1233607 + ... + 6740662.

Almost surely, 2^{21957372971032} is an apocalyptic number.

It is an amenable number.

21957372971032 is a deficient number, since it is larger than the sum of its proper divisors (19355406074168).

21957372971032 is a wasteful number, since it uses less digits than its factorization.

21957372971032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975467 (or 7975463 counting only the distinct ones).

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 21957372971032 in words is "twenty-one trillion, nine hundred fifty-seven billion, three hundred seventy-two million, nine hundred seventy-one thousand, thirty-two".