18671564480 has 112 divisors (see below), whose sum is σ = 46867023360. Its totient is φ = 7065676800.

The previous prime is 18671564467. The next prime is 18671564503. The reversal of 18671564480 is 8446517681.

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, 5537195 + ... + 5540565.

Almost surely, 2^18671564480 is an apocalyptic number.

18671564480 is a gapful number since it is divisible by the number (10) 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 18671564480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23433511680).

18671564480 is an abundant number, since it is smaller than the sum of its proper divisors (28195458880).

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

18671564480 is a wasteful number, since it uses less digits than its factorization.

18671564480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318 (or 4308 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 18671564480 in words is "eighteen billion, six hundred seventy-one million, five hundred sixty-four thousand, four hundred eighty".