18423575595937 has 4 divisors (see below), whose sum is σ = 18423591990916. Its totient is φ = 18423559200960.

The previous prime is 18423575595923. The next prime is 18423575595967. The reversal of 18423575595937 is 73959557532481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11658837566016 + 6764738029921 = 3414504^2 + 2600911^2 .

It is a cyclic number.

It is not a de Polignac number, because 18423575595937 - 2²³ = 18423567207329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18423575595937.

It is not an unprimeable number, because it can be changed into a prime (18423575595917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6377148 + ... + 8804269.

It is an arithmetic number, because the mean of its divisors is an integer number (4605897997729).

Almost surely, 2^{18423575595937} is an apocalyptic number.

It is an amenable number.

18423575595937 is a deficient number, since it is larger than the sum of its proper divisors (16394979).

18423575595937 is a wasteful number, since it uses less digits than its factorization.

18423575595937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16394978.

The product of its digits is 1428840000, while the sum is 73.

The spelling of 18423575595937 in words is "eighteen trillion, four hundred twenty-three billion, five hundred seventy-five million, five hundred ninety-five thousand, nine hundred thirty-seven".