12877552634 has 4 divisors (see below), whose sum is σ = 19316328954. Its totient is φ = 6438776316.

The previous prime is 12877552627. The next prime is 12877552637. The reversal of 12877552634 is 43625577821.

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

It can be written as a sum of positive squares in only one way, i.e., 12266227009 + 611325625 = 110753^2 + 24725^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12877552637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219388157 + ... + 3219388160.

Almost surely, 2^12877552634 is an apocalyptic number.

12877552634 is a deficient number, since it is larger than the sum of its proper divisors (6438776320).

12877552634 is an equidigital number, since it uses as much as digits as its factorization.

12877552634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438776319.

The product of its digits is 2822400, while the sum is 50.

The spelling of 12877552634 in words is "twelve billion, eight hundred seventy-seven million, five hundred fifty-two thousand, six hundred thirty-four".