18077947824 has 20 divisors (see below), whose sum is σ = 46701365336. Its totient is φ = 6025982592.

The previous prime is 18077947799. The next prime is 18077947831. The reversal of 18077947824 is 42874977081.

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 3 ways as a sum of consecutive naturals, for example, 188311909 + ... + 188312004.

Almost surely, 2^18077947824 is an apocalyptic number.

It is an amenable number.

18077947824 is an abundant number, since it is smaller than the sum of its proper divisors (28623417512).

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

18077947824 is a wasteful number, since it uses less digits than its factorization.

18077947824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376623924 (or 376623918 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 57.

The spelling of 18077947824 in words is "eighteen billion, seventy-seven million, nine hundred forty-seven thousand, eight hundred twenty-four".