12815690804915 has 32 divisors (see below), whose sum is σ = 16645751092224. Its totient is φ = 9435164659200.

The previous prime is 12815690804899. The next prime is 12815690804941. The reversal of 12815690804915 is 51940809651821.

It is not a de Polignac number, because 12815690804915 - 2⁴ = 12815690804899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2672612 + ... + 5724878.

It is an arithmetic number, because the mean of its divisors is an integer number (520179721632).

Almost surely, 2^{12815690804915} is an apocalyptic number.

12815690804915 is a deficient number, since it is larger than the sum of its proper divisors (3830060287309).

12815690804915 is a wasteful number, since it uses less digits than its factorization.

12815690804915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053387.

The product of its (nonzero) digits is 6220800, while the sum is 59.

The spelling of 12815690804915 in words is "twelve trillion, eight hundred fifteen billion, six hundred ninety million, eight hundred four thousand, nine hundred fifteen".