18673632163746 has 72 divisors (see below), whose sum is σ = 48688112077020. Its totient is φ = 5151346796736.

The previous prime is 18673632163733. The next prime is 18673632163829. The reversal of 18673632163746 is 64736123637681.

18673632163746 is a `hidden beast` number, since 18 + 6 + 7 + 36 + 3 + 216 + 374 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18667247354721 + 6384809025 = 4320561^2 + 79905^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 365007501 + ... + 365058656.

Almost surely, 2^{18673632163746} is an apocalyptic number.

18673632163746 is an abundant number, since it is smaller than the sum of its proper divisors (30014479913274).

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

18673632163746 is a wasteful number, since it uses less digits than its factorization.

18673632163746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730066208 (or 730066198 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 63.

The spelling of 18673632163746 in words is "eighteen trillion, six hundred seventy-three billion, six hundred thirty-two million, one hundred sixty-three thousand, seven hundred forty-six".