126336343633621 has 12 divisors (see below), whose sum is σ = 140163376854816. Its totient is φ = 113777845571720.

The previous prime is 126336343633543. The next prime is 126336343633639.

126336343633621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126336343633621 - 2²⁷ = 126336209415893 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 (126336343633651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4878968425 + ... + 4878994318.

It is an arithmetic number, because the mean of its divisors is an integer number (11680281404568).

Almost surely, 2^{126336343633621} is an apocalyptic number.

126336343633621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126336343633621 is a deficient number, since it is larger than the sum of its proper divisors (13827033221195).

126336343633621 is a wasteful number, since it uses less digits than its factorization.

126336343633621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757962872 (or 9757962861 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 52.

The spelling of 126336343633621 in words is "one hundred twenty-six trillion, three hundred thirty-six billion, three hundred forty-three million, six hundred thirty-three thousand, six hundred twenty-one".