18360406977 has 16 divisors (see below), whose sum is σ = 26713924608. Its totient is φ = 11124236880.

The previous prime is 18360406937. The next prime is 18360406993. The reversal of 18360406977 is 77960406381.

It is not a de Polignac number, because 18360406977 - 2⁶ = 18360406913 is a prime.

It is a super-2 number, since 2×18360406977² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18360406927) 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, 33948 + ... + 194610.

It is an arithmetic number, because the mean of its divisors is an integer number (1669620288).

Almost surely, 2^18360406977 is an apocalyptic number.

It is an amenable number.

18360406977 is a deficient number, since it is larger than the sum of its proper divisors (8353517631).

18360406977 is a wasteful number, since it uses less digits than its factorization.

18360406977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164140.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 18360406977 in words is "eighteen billion, three hundred sixty million, four hundred six thousand, nine hundred seventy-seven".