13557855664 has 10 divisors (see below), whose sum is σ = 26268345380. Its totient is φ = 6778927824.

The previous prime is 13557855629. The next prime is 13557855671. The reversal of 13557855664 is 46655875531.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423682974 + ... + 423683005.

It is an arithmetic number, because the mean of its divisors is an integer number (2626834538).

Almost surely, 2^13557855664 is an apocalyptic number.

It is an amenable number.

13557855664 is a deficient number, since it is larger than the sum of its proper divisors (12710489716).

13557855664 is an equidigital number, since it uses as much as digits as its factorization.

13557855664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847365987 (or 847365981 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 55.

It can be divided in two parts, 13557 and 855664, that added together give a triangular number (869221 = T₁₃₁₈).

The spelling of 13557855664 in words is "thirteen billion, five hundred fifty-seven million, eight hundred fifty-five thousand, six hundred sixty-four".