11580661532631 has 16 divisors (see below), whose sum is σ = 15855805212128. Its totient is φ = 7515589017600.

The previous prime is 11580661532579. The next prime is 11580661532701. The reversal of 11580661532631 is 13623516608511.

It is not a de Polignac number, because 11580661532631 - 2²⁷ = 11580527314903 is a prime.

It is a super-2 number, since 2×11580661532631² (a number of 27 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 (11580661533631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326179690 + ... + 326215191.

It is an arithmetic number, because the mean of its divisors is an integer number (990987825758).

Almost surely, 2^{11580661532631} is an apocalyptic number.

11580661532631 is a deficient number, since it is larger than the sum of its proper divisors (4275143679497).

11580661532631 is an equidigital number, since it uses as much as digits as its factorization.

11580661532631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652395042.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 11580661532631 in words is "eleven trillion, five hundred eighty billion, six hundred sixty-one million, five hundred thirty-two thousand, six hundred thirty-one".