15315138155 has 8 divisors (see below), whose sum is σ = 18826413984. Its totient is φ = 11953278400.

The previous prime is 15315138031. The next prime is 15315138197. The reversal of 15315138155 is 55183151351.

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

It is not a de Polignac number, because 15315138155 - 2²⁰ = 15314089579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37353791 + ... + 37354200.

It is an arithmetic number, because the mean of its divisors is an integer number (2353301748).

Almost surely, 2^15315138155 is an apocalyptic number.

15315138155 is a deficient number, since it is larger than the sum of its proper divisors (3511275829).

15315138155 is an equidigital number, since it uses as much as digits as its factorization.

15315138155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74708037.

The product of its digits is 45000, while the sum is 38.

The spelling of 15315138155 in words is "fifteen billion, three hundred fifteen million, one hundred thirty-eight thousand, one hundred fifty-five".