18550335051 has 12 divisors (see below), whose sum is σ = 26972380240. Its totient is φ = 12284989200.

The previous prime is 18550335049. The next prime is 18550335071. The reversal of 18550335051 is 15053305581.

18550335051 is a `hidden beast` number, since 1 + 8 + 550 + 3 + 3 + 50 + 51 = 666.

It is not a de Polignac number, because 18550335051 - 2¹ = 18550335049 is a prime.

It is a super-2 number, since 2×18550335051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18550334997 and 18550335015.

It is not an unprimeable number, because it can be changed into a prime (18550335071) 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, 6823636 + ... + 6826353.

Almost surely, 2^18550335051 is an apocalyptic number.

18550335051 is a deficient number, since it is larger than the sum of its proper divisors (8422045189).

18550335051 is a wasteful number, since it uses less digits than its factorization.

18550335051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650146 (or 13650143 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 18550335051 in words is "eighteen billion, five hundred fifty million, three hundred thirty-five thousand, fifty-one".