20496028131 has 32 divisors (see below), whose sum is σ = 31098045440. Its totient is φ = 13334479200.

The previous prime is 20496028129. The next prime is 20496028153. The reversal of 20496028131 is 13182069402.

20496028131 is a `hidden beast` number, since 2 + 0 + 49 + 602 + 8 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 20496028131 - 2¹ = 20496028129 is a prime.

It is a super-2 number, since 2×20496028131² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20496028031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1422021 + ... + 1436361.

It is an arithmetic number, because the mean of its divisors is an integer number (971813920).

Almost surely, 2^20496028131 is an apocalyptic number.

20496028131 is a deficient number, since it is larger than the sum of its proper divisors (10602017309).

20496028131 is a wasteful number, since it uses less digits than its factorization.

20496028131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15624 (or 15618 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 20496028131 in words is "twenty billion, four hundred ninety-six million, twenty-eight thousand, one hundred thirty-one".