18996048864 has 432 divisors, whose sum is σ = 62156989440. Its totient is φ = 5489003520.

The previous prime is 18996048853. The next prime is 18996048913. The reversal of 18996048864 is 46884069981.

18996048864 is a `hidden beast` number, since 1 + 8 + 9 + 96 + 0 + 488 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 79481257 + ... + 79481495.

It is an arithmetic number, because the mean of its divisors is an integer number (143881920).

Almost surely, 2^18996048864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18996048864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31078494720).

18996048864 is an abundant number, since it is smaller than the sum of its proper divisors (43160940576).

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

18996048864 is a wasteful number, since it uses less digits than its factorization.

18996048864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 18996048864 in words is "eighteen billion, nine hundred ninety-six million, forty-eight thousand, eight hundred sixty-four".