18311167745 has 24 divisors (see below), whose sum is σ = 23835981312. Its totient is φ = 13498056000.

The previous prime is 18311167663. The next prime is 18311167751. The reversal of 18311167745 is 54776111381.

It is not a de Polignac number, because 18311167745 - 2²⁰ = 18310119169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18311167696 and 18311167705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463520 + ... + 501470.

It is an arithmetic number, because the mean of its divisors is an integer number (993165888).

Almost surely, 2^18311167745 is an apocalyptic number.

It is an amenable number.

18311167745 is a deficient number, since it is larger than the sum of its proper divisors (5524813567).

18311167745 is a wasteful number, since it uses less digits than its factorization.

18311167745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38553 (or 38540 counting only the distinct ones).

The product of its digits is 141120, while the sum is 44.

The spelling of 18311167745 in words is "eighteen billion, three hundred eleven million, one hundred sixty-seven thousand, seven hundred forty-five".