18508076377 has 16 divisors (see below), whose sum is σ = 22808419200. Its totient is φ = 14662546560.

The previous prime is 18508076299. The next prime is 18508076401. The reversal of 18508076377 is 77367080581.

It is a cyclic number.

It is not a de Polignac number, because 18508076377 - 2¹¹ = 18508074329 is a prime.

It is a super-2 number, since 2×18508076377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18508076677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691602 + ... + 1702507.

It is an arithmetic number, because the mean of its divisors is an integer number (1425526200).

Almost surely, 2^18508076377 is an apocalyptic number.

It is an amenable number.

18508076377 is a deficient number, since it is larger than the sum of its proper divisors (4300342823).

18508076377 is a wasteful number, since it uses less digits than its factorization.

18508076377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394176.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 18508076377 in words is "eighteen billion, five hundred eight million, seventy-six thousand, three hundred seventy-seven".