18968533312884 has 48 divisors (see below), whose sum is σ = 44284835078400. Its totient is φ = 6319284564096.

The previous prime is 18968533312879. The next prime is 18968533312909. The reversal of 18968533312884 is 48821333586981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249288757 + ... + 249364835.

It is an arithmetic number, because the mean of its divisors is an integer number (922600730800).

Almost surely, 2^{18968533312884} is an apocalyptic number.

It is an amenable number.

18968533312884 is an abundant number, since it is smaller than the sum of its proper divisors (25316301765516).

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

18968533312884 is a wasteful number, since it uses less digits than its factorization.

18968533312884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87512 (or 87510 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 69.

The spelling of 18968533312884 in words is "eighteen trillion, nine hundred sixty-eight billion, five hundred thirty-three million, three hundred twelve thousand, eight hundred eighty-four".