11555616660131 has 2 divisors, whose sum is σ = 11555616660132. Its totient is φ = 11555616660130.

The previous prime is 11555616660073. The next prime is 11555616660139. The reversal of 11555616660131 is 13106661655511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11555616660131 - 2⁴² = 7157570149027 is a prime.

It is a super-2 number, since 2×11555616660131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11555616660139) 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, 5777808330065 + 5777808330066.

It is an arithmetic number, because the mean of its divisors is an integer number (5777808330066).

Almost surely, 2^{11555616660131} is an apocalyptic number.

11555616660131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555616660131 is an equidigital number, since it uses as much as digits as its factorization.

11555616660131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 47.

The spelling of 11555616660131 in words is "eleven trillion, five hundred fifty-five billion, six hundred sixteen million, six hundred sixty thousand, one hundred thirty-one".