18943624064772 has 36 divisors (see below), whose sum is σ = 52238478482736. Its totient is φ = 5740492140720.

The previous prime is 18943624064759. The next prime is 18943624064773. The reversal of 18943624064772 is 27746042634981.

18943624064772 is a `hidden beast` number, since 1 + 8 + 94 + 36 + 2 + 40 + 6 + 477 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18943624064773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23918716858 + ... + 23918717649.

Almost surely, 2^{18943624064772} is an apocalyptic number.

18943624064772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18943624064772 is an abundant number, since it is smaller than the sum of its proper divisors (33294854417964).

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

18943624064772 is a wasteful number, since it uses less digits than its factorization.

18943624064772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47837434528 (or 47837434523 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 63.

The spelling of 18943624064772 in words is "eighteen trillion, nine hundred forty-three billion, six hundred twenty-four million, sixty-four thousand, seven hundred seventy-two".