23601570557 has 2 divisors, whose sum is σ = 23601570558. Its totient is φ = 23601570556.

The previous prime is 23601570539. The next prime is 23601570599. The reversal of 23601570557 is 75507510632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14707383076 + 8894187481 = 121274^2 + 94309^2 .

It is a cyclic number.

It is not a de Polignac number, because 23601570557 - 2¹⁰ = 23601569533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23601500557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11800785278 + 11800785279.

It is an arithmetic number, because the mean of its divisors is an integer number (11800785279).

Almost surely, 2^23601570557 is an apocalyptic number.

It is an amenable number.

23601570557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23601570557 is an equidigital number, since it uses as much as digits as its factorization.

23601570557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 41.

The spelling of 23601570557 in words is "twenty-three billion, six hundred one million, five hundred seventy thousand, five hundred fifty-seven".