18671340411 has 12 divisors (see below), whose sum is σ = 27148323280. Its totient is φ = 12365125200.

The previous prime is 18671340343. The next prime is 18671340433. The reversal of 18671340411 is 11404317681.

18671340411 is a `hidden beast` number, since 186 + 71 + 3 + 404 + 1 + 1 = 666.

It is not a de Polignac number, because 18671340411 - 2²⁵ = 18637785979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18671340211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6868156 + ... + 6870873.

Almost surely, 2^18671340411 is an apocalyptic number.

18671340411 is a deficient number, since it is larger than the sum of its proper divisors (8476982869).

18671340411 is a wasteful number, since it uses less digits than its factorization.

18671340411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13739186 (or 13739183 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 18671340411 in words is "eighteen billion, six hundred seventy-one million, three hundred forty thousand, four hundred eleven".