23557321857 has 8 divisors (see below), whose sum is σ = 31452616384. Its totient is φ = 15683454288.

The previous prime is 23557321841. The next prime is 23557321859. The reversal of 23557321857 is 75812375532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23557321857 - 2⁴ = 23557321841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23557321859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354173 + ... + 5358570.

It is an arithmetic number, because the mean of its divisors is an integer number (3931577048).

Almost surely, 2^23557321857 is an apocalyptic number.

It is an amenable number.

23557321857 is a deficient number, since it is larger than the sum of its proper divisors (7895294527).

23557321857 is a wasteful number, since it uses less digits than its factorization.

23557321857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10713479.

The product of its digits is 1764000, while the sum is 48.

The spelling of 23557321857 in words is "twenty-three billion, five hundred fifty-seven million, three hundred twenty-one thousand, eight hundred fifty-seven".