18606432976 has 20 divisors (see below), whose sum is σ = 36200808000. Its totient is φ = 9264288992.

The previous prime is 18606432947. The next prime is 18606432983. The reversal of 18606432976 is 67923460681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2429026 + ... + 2436673.

It is an arithmetic number, because the mean of its divisors is an integer number (1810040400).

Almost surely, 2^18606432976 is an apocalyptic number.

18606432976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18606432976 is a deficient number, since it is larger than the sum of its proper divisors (17594375024).

18606432976 is a wasteful number, since it uses less digits than its factorization.

18606432976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865946 (or 4865940 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 18606432976 in words is "eighteen billion, six hundred six million, four hundred thirty-two thousand, nine hundred seventy-six".