5581353126631 has 4 divisors (see below), whose sum is σ = 5581362746152. Its totient is φ = 5581343507112.

The previous prime is 5581353126577. The next prime is 5581353126641. The reversal of 5581353126631 is 1366213531855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5581353126631 - 2²³ = 5581344738023 is a prime.

It is a super-2 number, since 2×5581353126631² (a number of 26 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 (5581353126641) 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, 3879465 + ... + 5119858.

It is an arithmetic number, because the mean of its divisors is an integer number (1395340686538).

Almost surely, 2^{5581353126631} is an apocalyptic number.

5581353126631 is a deficient number, since it is larger than the sum of its proper divisors (9619521).

5581353126631 is an equidigital number, since it uses as much as digits as its factorization.

5581353126631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619520.

The product of its digits is 1944000, while the sum is 49.

The spelling of 5581353126631 in words is "five trillion, five hundred eighty-one billion, three hundred fifty-three million, one hundred twenty-six thousand, six hundred thirty-one".