11631251771717 has 2 divisors, whose sum is σ = 11631251771718. Its totient is φ = 11631251771716.

The previous prime is 11631251771693. The next prime is 11631251771807. The reversal of 11631251771717 is 71717715213611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7302392862436 + 4328858909281 = 2702294^2 + 2080591^2 .

It is a cyclic number.

It is not a de Polignac number, because 11631251771717 - 2²⁴ = 11631234994501 is a prime.

It is a super-2 number, since 2×11631251771717² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11631251771417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5815625885858 + 5815625885859.

It is an arithmetic number, because the mean of its divisors is an integer number (5815625885859).

Almost surely, 2^{11631251771717} is an apocalyptic number.

It is an amenable number.

11631251771717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11631251771717 is an equidigital number, since it uses as much as digits as its factorization.

11631251771717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432180, while the sum is 50.

The spelling of 11631251771717 in words is "eleven trillion, six hundred thirty-one billion, two hundred fifty-one million, seven hundred seventy-one thousand, seven hundred seventeen".