18772818824 has 32 divisors (see below), whose sum is σ = 37114912800. Its totient is φ = 8877196800.

The previous prime is 18772818787. The next prime is 18772818833. The reversal of 18772818824 is 42881827781.

It is a self number, because there is not a number n which added to its sum of digits gives 18772818824.

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 7 ways as a sum of consecutive naturals, for example, 15977 + ... + 194424.

It is an arithmetic number, because the mean of its divisors is an integer number (1159841025).

Almost surely, 2^18772818824 is an apocalyptic number.

It is an amenable number.

18772818824 is a deficient number, since it is larger than the sum of its proper divisors (18342093976).

18772818824 is a wasteful number, since it uses less digits than its factorization.

18772818824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211013 (or 211009 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 56.

The spelling of 18772818824 in words is "eighteen billion, seven hundred seventy-two million, eight hundred eighteen thousand, eight hundred twenty-four".