12531915457 has 8 divisors (see below), whose sum is σ = 12750271232. Its totient is φ = 12313976400.

The previous prime is 12531915437. The next prime is 12531915467. The reversal of 12531915457 is 75451913521.

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

It is a cyclic number.

It is not a de Polignac number, because 12531915457 - 2¹⁵ = 12531882689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12531915437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43203 + ... + 164104.

It is an arithmetic number, because the mean of its divisors is an integer number (1593783904).

Almost surely, 2^12531915457 is an apocalyptic number.

It is an amenable number.

12531915457 is a deficient number, since it is larger than the sum of its proper divisors (218355775).

12531915457 is an equidigital number, since it uses as much as digits as its factorization.

12531915457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208359.

The product of its digits is 189000, while the sum is 43.

The spelling of 12531915457 in words is "twelve billion, five hundred thirty-one million, nine hundred fifteen thousand, four hundred fifty-seven".