18577878632 has 16 divisors (see below), whose sum is σ = 34889805600. Its totient is φ = 9273930480.

The previous prime is 18577878623. The next prime is 18577878677. The reversal of 18577878632 is 23687877581.

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, 1870844 + ... + 1880747.

It is an arithmetic number, because the mean of its divisors is an integer number (2180612850).

Almost surely, 2^18577878632 is an apocalyptic number.

It is an amenable number.

18577878632 is a deficient number, since it is larger than the sum of its proper divisors (16311926968).

18577878632 is a wasteful number, since it uses less digits than its factorization.

18577878632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752216 (or 3752212 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 62.

The spelling of 18577878632 in words is "eighteen billion, five hundred seventy-seven million, eight hundred seventy-eight thousand, six hundred thirty-two".