23557321864 has 16 divisors (see below), whose sum is σ = 44177083020. Its totient is φ = 11776766400.

The previous prime is 23557321859. The next prime is 23557321883. The reversal of 23557321864 is 46812375532.

It can be written as a sum of positive squares in 2 ways, for example, as 20269216900 + 3288104964 = 142370^2 + 57342^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 183259 + ... + 284074.

Almost surely, 2^23557321864 is an apocalyptic number.

It is an amenable number.

23557321864 is a deficient number, since it is larger than the sum of its proper divisors (20619761156).

23557321864 is a wasteful number, since it uses less digits than its factorization.

23557321864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473640 (or 473636 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The spelling of 23557321864 in words is "twenty-three billion, five hundred fifty-seven million, three hundred twenty-one thousand, eight hundred sixty-four".