18316275079539 has 4 divisors (see below), whose sum is σ = 24421700106056. Its totient is φ = 12210850053024.

The previous prime is 18316275079537. The next prime is 18316275079567. The reversal of 18316275079539 is 93597057261381.

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

It is not a de Polignac number, because 18316275079539 - 2¹ = 18316275079537 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 18316275079539.

It is not an unprimeable number, because it can be changed into a prime (18316275079537) 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, 3052712513254 + ... + 3052712513259.

It is an arithmetic number, because the mean of its divisors is an integer number (6105425026514).

Almost surely, 2^{18316275079539} is an apocalyptic number.

18316275079539 is a deficient number, since it is larger than the sum of its proper divisors (6105425026517).

18316275079539 is an equidigital number, since it uses as much as digits as its factorization.

18316275079539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105425026516.

The product of its (nonzero) digits is 85730400, while the sum is 66.

The spelling of 18316275079539 in words is "eighteen trillion, three hundred sixteen billion, two hundred seventy-five million, seventy-nine thousand, five hundred thirty-nine".