18123560745 has 8 divisors (see below), whose sum is σ = 28997697216. Its totient is φ = 9665899056.

The previous prime is 18123560729. The next prime is 18123560813. The reversal of 18123560745 is 54706532181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18123560745 - 2⁴ = 18123560729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18123560697 and 18123560706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604118677 + ... + 604118706.

It is an arithmetic number, because the mean of its divisors is an integer number (3624712152).

Almost surely, 2^18123560745 is an apocalyptic number.

18123560745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18123560745 is a deficient number, since it is larger than the sum of its proper divisors (10874136471).

18123560745 is a wasteful number, since it uses less digits than its factorization.

18123560745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208237391.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 18123560745 in words is "eighteen billion, one hundred twenty-three million, five hundred sixty thousand, seven hundred forty-five".