12315018915 has 48 divisors (see below), whose sum is σ = 22817471040. Its totient is φ = 6129192960.

The previous prime is 12315018871. The next prime is 12315018953. The reversal of 12315018915 is 51981051321.

It is not a de Polignac number, because 12315018915 - 2⁶ = 12315018851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12315018915.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102670 + ... + 187539.

It is an arithmetic number, because the mean of its divisors is an integer number (475363980).

Almost surely, 2^12315018915 is an apocalyptic number.

12315018915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12315018915 is a deficient number, since it is larger than the sum of its proper divisors (10502452125).

12315018915 is a wasteful number, since it uses less digits than its factorization.

12315018915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290284 (or 290281 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The spelling of 12315018915 in words is "twelve billion, three hundred fifteen million, eighteen thousand, nine hundred fifteen".