18316275079538 has 8 divisors (see below), whose sum is σ = 27475217314032. Its totient is φ = 9157869308196.

The previous prime is 18316275079537. The next prime is 18316275079567. The reversal of 18316275079538 is 83597057261381.

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

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, 134030420 + ... + 134167007.

It is an arithmetic number, because the mean of its divisors is an integer number (3434402164254).

Almost surely, 2^{18316275079538} is an apocalyptic number.

18316275079538 is a deficient number, since it is larger than the sum of its proper divisors (9158942234494).

18316275079538 is a wasteful number, since it uses less digits than its factorization.

18316275079538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268231576.

The product of its (nonzero) digits is 76204800, while the sum is 65.

The spelling of 18316275079538 in words is "eighteen trillion, three hundred sixteen billion, two hundred seventy-five million, seventy-nine thousand, five hundred thirty-eight".