18619144955136 has 108 divisors (see below), whose sum is σ = 58563911034720. Its totient is φ = 5642165130240.

The previous prime is 18619144954919. The next prime is 18619144955143. The reversal of 18619144955136 is 63155944191681.

18619144955136 is a `hidden beast` number, since 1 + 8 + 6 + 1 + 9 + 1 + 4 + 49 + 551 + 36 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367303116 + ... + 367353803.

Almost surely, 2^{18619144955136} is an apocalyptic number.

18619144955136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18619144955136 is an abundant number, since it is smaller than the sum of its proper divisors (39944766079584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18619144955136 is a wasteful number, since it uses less digits than its factorization.

18619144955136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734656952 (or 734656935 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The spelling of 18619144955136 in words is "eighteen trillion, six hundred nineteen billion, one hundred forty-four million, nine hundred fifty-five thousand, one hundred thirty-six".