20926631272 has 16 divisors (see below), whose sum is σ = 39242405700. Its totient is φ = 10461989760.

The previous prime is 20926631267. The next prime is 20926631291. The reversal of 20926631272 is 27213662902.

It can be written as a sum of positive squares in 2 ways, for example, as 20890077156 + 36554116 = 144534^2 + 6046^2 .

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, 96979 + ... + 226402.

Almost surely, 2^20926631272 is an apocalyptic number.

It is an amenable number.

20926631272 is a deficient number, since it is larger than the sum of its proper divisors (18315774428).

20926631272 is a wasteful number, since it uses less digits than its factorization.

20926631272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331476 (or 331472 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 20926631272 in words is "twenty billion, nine hundred twenty-six million, six hundred thirty-one thousand, two hundred seventy-two".