18713427436565 has 8 divisors (see below), whose sum is σ = 22772396204928. Its totient is φ = 14759886428560.

The previous prime is 18713427436547. The next prime is 18713427436579. The reversal of 18713427436565 is 56563472431781.

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

It is not a de Polignac number, because 18713427436565 - 2²⁸ = 18713159001109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18713427436498 and 18713427436507.

It is a congruent number.

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, 26356939697 + ... + 26356940406.

It is an arithmetic number, because the mean of its divisors is an integer number (2846549525616).

Almost surely, 2^{18713427436565} is an apocalyptic number.

It is an amenable number.

18713427436565 is a deficient number, since it is larger than the sum of its proper divisors (4058968768363).

18713427436565 is an equidigital number, since it uses as much as digits as its factorization.

18713427436565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52713880179.

The product of its digits is 101606400, while the sum is 62.

The spelling of 18713427436565 in words is "eighteen trillion, seven hundred thirteen billion, four hundred twenty-seven million, four hundred thirty-six thousand, five hundred sixty-five".