20232613557 has 12 divisors (see below), whose sum is σ = 31472954604. Its totient is φ = 12450839040.

The previous prime is 20232613553. The next prime is 20232613559. The reversal of 20232613557 is 75531623202.

20232613557 is a `hidden beast` number, since 2 + 0 + 2 + 32 + 613 + 5 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 991872036 + 19240741521 = 31494^2 + 138711^2 .

It is not a de Polignac number, because 20232613557 - 2² = 20232613553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232613553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86464044 + ... + 86464277.

It is an arithmetic number, because the mean of its divisors is an integer number (2622746217).

Almost surely, 2^20232613557 is an apocalyptic number.

It is an amenable number.

20232613557 is a deficient number, since it is larger than the sum of its proper divisors (11240341047).

20232613557 is a wasteful number, since it uses less digits than its factorization.

20232613557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172928340 (or 172928337 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 20232613557 in words is "twenty billion, two hundred thirty-two million, six hundred thirteen thousand, five hundred fifty-seven".