18559880972 has 6 divisors (see below), whose sum is σ = 32479791708. Its totient is φ = 9279940484.

The previous prime is 18559880971. The next prime is 18559880987. The reversal of 18559880972 is 27908895581.

It is a super-3 number, since 3×18559880972³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18559880971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2319985118 + ... + 2319985125.

It is an arithmetic number, because the mean of its divisors is an integer number (5413298618).

Almost surely, 2^18559880972 is an apocalyptic number.

It is an amenable number.

18559880972 is a deficient number, since it is larger than the sum of its proper divisors (13919910736).

18559880972 is a wasteful number, since it uses less digits than its factorization.

18559880972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639970247 (or 4639970245 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 62.

The spelling of 18559880972 in words is "eighteen billion, five hundred fifty-nine million, eight hundred eighty thousand, nine hundred seventy-two".