18040979757 has 16 divisors (see below), whose sum is σ = 24403199040. Its totient is φ = 11853297792.

The previous prime is 18040979753. The next prime is 18040979783. The reversal of 18040979757 is 75797904081.

It is not a de Polignac number, because 18040979757 - 2² = 18040979753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18040979697 and 18040979706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040979753) 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, 254719 + ... + 317747.

It is an arithmetic number, because the mean of its divisors is an integer number (1525199940).

Almost surely, 2^18040979757 is an apocalyptic number.

It is an amenable number.

18040979757 is a deficient number, since it is larger than the sum of its proper divisors (6362219283).

18040979757 is a wasteful number, since it uses less digits than its factorization.

18040979757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64412.

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 18040979757 in words is "eighteen billion, forty million, nine hundred seventy-nine thousand, seven hundred fifty-seven".