18047866564 has 48 divisors (see below), whose sum is σ = 40126299136. Its totient is φ = 6909494400.

The previous prime is 18047866531. The next prime is 18047866579. The reversal of 18047866564 is 46566874081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788427 + ... + 810994.

Almost surely, 2^18047866564 is an apocalyptic number.

18047866564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18047866564 is an abundant number, since it is smaller than the sum of its proper divisors (22078432572).

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

18047866564 is a wasteful number, since it uses less digits than its factorization.

18047866564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599476 (or 1599474 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 18047866564 in words is "eighteen billion, forty-seven million, eight hundred sixty-six thousand, five hundred sixty-four".