12512637507 has 4 divisors (see below), whose sum is σ = 16683516680. Its totient is φ = 8341758336.

The previous prime is 12512637497. The next prime is 12512637523. The reversal of 12512637507 is 70573621521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12512637507 - 2⁶ = 12512637443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512637547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085439582 + ... + 2085439587.

It is an arithmetic number, because the mean of its divisors is an integer number (4170879170).

Almost surely, 2^12512637507 is an apocalyptic number.

12512637507 is a deficient number, since it is larger than the sum of its proper divisors (4170879173).

12512637507 is an equidigital number, since it uses as much as digits as its factorization.

12512637507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170879172.

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 12512637507 in words is "twelve billion, five hundred twelve million, six hundred thirty-seven thousand, five hundred seven".