18711022976 has 48 divisors (see below), whose sum is σ = 37544197740. Its totient is φ = 9288297216.

The previous prime is 18711022973. The next prime is 18711022991. The reversal of 18711022976 is 67922011781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18711022973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19757735 + ... + 19758681.

Almost surely, 2^18711022976 is an apocalyptic number.

18711022976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18711022976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18772098870).

18711022976 is an abundant number, since it is smaller than the sum of its proper divisors (18833174764).

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

18711022976 is an frugal number, since it uses more digits than its factorization.

18711022976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 44.

The spelling of 18711022976 in words is "eighteen billion, seven hundred eleven million, twenty-two thousand, nine hundred seventy-six".