18337545568 has 96 divisors (see below), whose sum is σ = 38182330368. Its totient is φ = 8656243200.

The previous prime is 18337545497. The next prime is 18337545613. The reversal of 18337545568 is 86554573381.

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, 25223221 + ... + 25223947.

It is an arithmetic number, because the mean of its divisors is an integer number (397732608).

Almost surely, 2^18337545568 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 18337545568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19091165184).

18337545568 is an abundant number, since it is smaller than the sum of its proper divisors (19844784800).

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

18337545568 is a wasteful number, since it uses less digits than its factorization.

18337545568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1348 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 55.

The spelling of 18337545568 in words is "eighteen billion, three hundred thirty-seven million, five hundred forty-five thousand, five hundred sixty-eight".