18776049272 has 32 divisors (see below), whose sum is σ = 35559803520. Its totient is φ = 9293562720.

The previous prime is 18776049269. The next prime is 18776049277. The reversal of 18776049272 is 27294067781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18776049277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1303373 + ... + 1317699.

It is an arithmetic number, because the mean of its divisors is an integer number (1111243860).

Almost surely, 2^18776049272 is an apocalyptic number.

It is an amenable number.

18776049272 is a deficient number, since it is larger than the sum of its proper divisors (16783754248).

18776049272 is a wasteful number, since it uses less digits than its factorization.

18776049272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15971 (or 15967 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 18776049272 in words is "eighteen billion, seven hundred seventy-six million, forty-nine thousand, two hundred seventy-two".