18885016872002 has 16 divisors (see below), whose sum is σ = 28334263965624. Its totient is φ = 9440262480000.

The previous prime is 18885016871989. The next prime is 18885016872023. The reversal of 18885016872002 is 20027861058881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14790339164041 + 4094677707961 = 3845821^2 + 2023531^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168018302 + ... + 168130662.

Almost surely, 2^{18885016872002} is an apocalyptic number.

18885016872002 is a deficient number, since it is larger than the sum of its proper divisors (9449247093622).

18885016872002 is a wasteful number, since it uses less digits than its factorization.

18885016872002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131605.

The product of its (nonzero) digits is 3440640, while the sum is 56.

The spelling of 18885016872002 in words is "eighteen trillion, eight hundred eighty-five billion, sixteen million, eight hundred seventy-two thousand, two".