18140404751 has 16 divisors (see below), whose sum is σ = 21076312320. Its totient is φ = 15292696320.

The previous prime is 18140404741. The next prime is 18140404759. The reversal of 18140404751 is 15740404181.

It is a cyclic number.

It is not a de Polignac number, because 18140404751 - 2²⁶ = 18073295887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18140404759) 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, 16991 + ... + 191231.

It is an arithmetic number, because the mean of its divisors is an integer number (1317269520).

Almost surely, 2^18140404751 is an apocalyptic number.

18140404751 is a deficient number, since it is larger than the sum of its proper divisors (2935907569).

18140404751 is a wasteful number, since it uses less digits than its factorization.

18140404751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174494.

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 18140404751 in words is "eighteen billion, one hundred forty million, four hundred four thousand, seven hundred fifty-one".