18612860555 has 16 divisors (see below), whose sum is σ = 22521210624. Its totient is φ = 14766591840.

The previous prime is 18612860549. The next prime is 18612860587. The reversal of 18612860555 is 55506821681.

It is not a de Polignac number, because 18612860555 - 2¹⁴ = 18612844171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043744 + ... + 1061426.

It is an arithmetic number, because the mean of its divisors is an integer number (1407575664).

Almost surely, 2^18612860555 is an apocalyptic number.

18612860555 is a deficient number, since it is larger than the sum of its proper divisors (3908350069).

18612860555 is a wasteful number, since it uses less digits than its factorization.

18612860555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19426.

The product of its (nonzero) digits is 576000, while the sum is 47.

The spelling of 18612860555 in words is "eighteen billion, six hundred twelve million, eight hundred sixty thousand, five hundred fifty-five".