16115312315 has 16 divisors (see below), whose sum is σ = 19870963200. Its totient is φ = 12539702112.

The previous prime is 16115312303. The next prime is 16115312351. The reversal of 16115312315 is 51321351161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16115312315 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105425 + ... + 208194.

It is an arithmetic number, because the mean of its divisors is an integer number (1241935200).

Almost surely, 2^16115312315 is an apocalyptic number.

16115312315 is a deficient number, since it is larger than the sum of its proper divisors (3755650885).

16115312315 is a wasteful number, since it uses less digits than its factorization.

16115312315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313906.

The product of its digits is 2700, while the sum is 29.

Adding to 16115312315 its reverse (51321351161), we get a palindrome (67436663476).

The spelling of 16115312315 in words is "sixteen billion, one hundred fifteen million, three hundred twelve thousand, three hundred fifteen".