20631862504 has 32 divisors (see below), whose sum is σ = 42295608000. Its totient is φ = 9357214720.

The previous prime is 20631862483. The next prime is 20631862561. The reversal of 20631862504 is 40526813602.

It is a super-2 number, since 2×20631862504² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221572 + ... + 300595.

It is an arithmetic number, because the mean of its divisors is an integer number (1321737750).

Almost surely, 2^20631862504 is an apocalyptic number.

It is an amenable number.

20631862504 is an abundant number, since it is smaller than the sum of its proper divisors (21663745496).

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

20631862504 is a wasteful number, since it uses less digits than its factorization.

20631862504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522633 (or 522629 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20631862504 in words is "twenty billion, six hundred thirty-one million, eight hundred sixty-two thousand, five hundred four".