13557768818 has 16 divisors (see below), whose sum is σ = 22187399040. Its totient is φ = 6162078000.

The previous prime is 13557768799. The next prime is 13557768841. The reversal of 13557768818 is 81886775531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334343 + ... + 372693.

It is an arithmetic number, because the mean of its divisors is an integer number (1386712440).

Almost surely, 2^13557768818 is an apocalyptic number.

13557768818 is a deficient number, since it is larger than the sum of its proper divisors (8629630222).

13557768818 is a wasteful number, since it uses less digits than its factorization.

13557768818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54433.

The product of its digits is 11289600, while the sum is 59.

The spelling of 13557768818 in words is "thirteen billion, five hundred fifty-seven million, seven hundred sixty-eight thousand, eight hundred eighteen".