23013594521 has 2 divisors, whose sum is σ = 23013594522. Its totient is φ = 23013594520.

The previous prime is 23013594491. The next prime is 23013594529. The reversal of 23013594521 is 12549531032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15131706121 + 7881888400 = 123011^2 + 88780^2 .

It is a cyclic number.

It is not a de Polignac number, because 23013594521 - 2²² = 23009400217 is a prime.

It is not a weakly prime, because it can be changed into another prime (23013594529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506797260 + 11506797261.

It is an arithmetic number, because the mean of its divisors is an integer number (11506797261).

Almost surely, 2^23013594521 is an apocalyptic number.

It is an amenable number.

23013594521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23013594521 is an equidigital number, since it uses as much as digits as its factorization.

23013594521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 23013594521 in words is "twenty-three billion, thirteen million, five hundred ninety-four thousand, five hundred twenty-one".