12634527157 has 6 divisors (see below), whose sum is σ = 14697307158. Its totient is φ = 10829594664.

The previous prime is 12634527133. The next prime is 12634527161. The reversal of 12634527157 is 75172543621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12415753476 + 218773681 = 111426^2 + 14791^2 .

It is not a de Polignac number, because 12634527157 - 2⁷ = 12634527029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634527167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128923698 + ... + 128923795.

It is an arithmetic number, because the mean of its divisors is an integer number (2449551193).

Almost surely, 2^12634527157 is an apocalyptic number.

It is an amenable number.

12634527157 is a deficient number, since it is larger than the sum of its proper divisors (2062780001).

12634527157 is an equidigital number, since it uses as much as digits as its factorization.

12634527157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257847507 (or 257847500 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The spelling of 12634527157 in words is "twelve billion, six hundred thirty-four million, five hundred twenty-seven thousand, one hundred fifty-seven".