12623632621 has 4 divisors (see below), whose sum is σ = 12631489632. Its totient is φ = 12615775612.

The previous prime is 12623632613. The next prime is 12623632631.

12623632621 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12623632621 - 2³ = 12623632613 is a prime.

It is a super-2 number, since 2×12623632621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12623632631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926095 + ... + 3929308.

It is an arithmetic number, because the mean of its divisors is an integer number (3157872408).

Almost surely, 2^12623632621 is an apocalyptic number.

It is an amenable number.

12623632621 is a deficient number, since it is larger than the sum of its proper divisors (7857011).

12623632621 is an equidigital number, since it uses as much as digits as its factorization.

12623632621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857010.

The product of its digits is 31104, while the sum is 34.

The spelling of 12623632621 in words is "twelve billion, six hundred twenty-three million, six hundred thirty-two thousand, six hundred twenty-one".