12637873621 has 8 divisors (see below), whose sum is σ = 12718573920. Its totient is φ = 12557212272.

The previous prime is 12637873537. The next prime is 12637873673.

It is a happy number.

12637873621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12637873621 - 2⁹ = 12637873109 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 (12637873681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921150 + ... + 934768.

It is an arithmetic number, because the mean of its divisors is an integer number (1589821740).

Almost surely, 2^12637873621 is an apocalyptic number.

It is an amenable number.

12637873621 is a deficient number, since it is larger than the sum of its proper divisors (80700299).

12637873621 is a wasteful number, since it uses less digits than its factorization.

12637873621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19475.

The product of its digits is 508032, while the sum is 46.

The spelling of 12637873621 in words is "twelve billion, six hundred thirty-seven million, eight hundred seventy-three thousand, six hundred twenty-one".