12512507577 has 4 divisors (see below), whose sum is σ = 16683343440. Its totient is φ = 8341671716.

The previous prime is 12512507563. The next prime is 12512507593. The reversal of 12512507577 is 77570521521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12512507577 - 2²² = 12508313273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12512502577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085417927 + ... + 2085417932.

It is an arithmetic number, because the mean of its divisors is an integer number (4170835860).

Almost surely, 2^12512507577 is an apocalyptic number.

It is an amenable number.

12512507577 is a deficient number, since it is larger than the sum of its proper divisors (4170835863).

12512507577 is an equidigital number, since it uses as much as digits as its factorization.

12512507577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170835862.

The product of its (nonzero) digits is 171500, while the sum is 42.

The spelling of 12512507577 in words is "twelve billion, five hundred twelve million, five hundred seven thousand, five hundred seventy-seven".