12634524621 has 24 divisors (see below), whose sum is σ = 18856146816. Its totient is φ = 8147674080.

The previous prime is 12634524587. The next prime is 12634524647. The reversal of 12634524621 is 12642543621.

12634524621 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 4 + 5 + 24 + 621 = 666.

It is not a de Polignac number, because 12634524621 - 2¹¹ = 12634522573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634524691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152665 + ... + 220398.

It is an arithmetic number, because the mean of its divisors is an integer number (785672784).

Almost surely, 2^12634524621 is an apocalyptic number.

It is an amenable number.

12634524621 is a deficient number, since it is larger than the sum of its proper divisors (6221622195).

12634524621 is a wasteful number, since it uses less digits than its factorization.

12634524621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373193 (or 373190 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The spelling of 12634524621 in words is "twelve billion, six hundred thirty-four million, five hundred twenty-four thousand, six hundred twenty-one".