18660705131 has 8 divisors (see below), whose sum is σ = 18715275120. Its totient is φ = 18606163968.

The previous prime is 18660705101. The next prime is 18660705149. The reversal of 18660705131 is 13150706681.

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

It is a cyclic number.

It is not a de Polignac number, because 18660705131 - 2¹⁸ = 18660442987 is a prime.

It is a super-2 number, since 2×18660705131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18660705101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640755 + ... + 2647811.

It is an arithmetic number, because the mean of its divisors is an integer number (2339409390).

Almost surely, 2^18660705131 is an apocalyptic number.

18660705131 is a deficient number, since it is larger than the sum of its proper divisors (54569989).

18660705131 is an equidigital number, since it uses as much as digits as its factorization.

18660705131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14413.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 18660705131 in words is "eighteen billion, six hundred sixty million, seven hundred five thousand, one hundred thirty-one".