126313313621 has 4 divisors (see below), whose sum is σ = 137796342144. Its totient is φ = 114830285100.

The previous prime is 126313313569. The next prime is 126313313627.

126313313621 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 126313313621 - 2⁶ = 126313313557 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 (126313313627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5741514245 + ... + 5741514266.

It is an arithmetic number, because the mean of its divisors is an integer number (34449085536).

Almost surely, 2^126313313621 is an apocalyptic number.

126313313621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126313313621 is a deficient number, since it is larger than the sum of its proper divisors (11483028523).

126313313621 is a wasteful number, since it uses less digits than its factorization.

126313313621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483028522.

The product of its digits is 11664, while the sum is 32.

It can be divided in two parts, 126313 and 313621, that added together give a palindrome (439934).

The spelling of 126313313621 in words is "one hundred twenty-six billion, three hundred thirteen million, three hundred thirteen thousand, six hundred twenty-one".