12632985641 has 6 divisors (see below), whose sum is σ = 12948624126. Its totient is φ = 12324862400.

The previous prime is 12632985637. The next prime is 12632985643. The reversal of 12632985641 is 14658923621.

It can be written as a sum of positive squares in 3 ways, for example, as 129049600 + 12503936041 = 11360^2 + 111821^2 .

It is not a de Polignac number, because 12632985641 - 2² = 12632985637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12632985643) 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, 3755900 + ... + 3759261.

It is an arithmetic number, because the mean of its divisors is an integer number (2158104021).

Almost surely, 2^12632985641 is an apocalyptic number.

It is an amenable number.

12632985641 is a deficient number, since it is larger than the sum of its proper divisors (315638485).

12632985641 is an frugal number, since it uses more digits than its factorization.

12632985641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7515243 (or 7515202 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The spelling of 12632985641 in words is "twelve billion, six hundred thirty-two million, nine hundred eighty-five thousand, six hundred forty-one".