20592921931 has 2 divisors, whose sum is σ = 20592921932. Its totient is φ = 20592921930.

The previous prime is 20592921907. The next prime is 20592921961. The reversal of 20592921931 is 13912929502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20592921931 is a prime.

It is a super-2 number, since 2×20592921931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20592921961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10296460965 + 10296460966.

It is an arithmetic number, because the mean of its divisors is an integer number (10296460966).

Almost surely, 2^20592921931 is an apocalyptic number.

20592921931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20592921931 is an equidigital number, since it uses as much as digits as its factorization.

20592921931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 20592921931 in words is "twenty billion, five hundred ninety-two million, nine hundred twenty-one thousand, nine hundred thirty-one".