23572538991413 has 4 divisors (see below), whose sum is σ = 23958974056908. Its totient is φ = 23186103925920.

The previous prime is 23572538991251. The next prime is 23572538991479. The reversal of 23572538991413 is 31419983527532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6940685092324 + 16631853899089 = 2634518^2 + 4078217^2 .

It is a cyclic number.

It is not a de Polignac number, because 23572538991413 - 2¹⁸ = 23572538729269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23572538931413) 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 in 3 ways as a sum of consecutive naturals, for example, 193217532656 + ... + 193217532777.

It is an arithmetic number, because the mean of its divisors is an integer number (5989743514227).

Almost surely, 2^{23572538991413} is an apocalyptic number.

It is an amenable number.

23572538991413 is a deficient number, since it is larger than the sum of its proper divisors (386435065495).

23572538991413 is an equidigital number, since it uses as much as digits as its factorization.

23572538991413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386435065494.

The product of its digits is 48988800, while the sum is 62.

The spelling of 23572538991413 in words is "twenty-three trillion, five hundred seventy-two billion, five hundred thirty-eight million, nine hundred ninety-one thousand, four hundred thirteen".