11512513623539 has 2 divisors, whose sum is σ = 11512513623540. Its totient is φ = 11512513623538.

The previous prime is 11512513623511. The next prime is 11512513623557. The reversal of 11512513623539 is 93532631521511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11512513623539 - 2⁸ = 11512513623283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11512513623493 and 11512513623502.

It is not a weakly prime, because it can be changed into another prime (11512513823539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756256811769 + 5756256811770.

It is an arithmetic number, because the mean of its divisors is an integer number (5756256811770).

Almost surely, 2^{11512513623539} is an apocalyptic number.

11512513623539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512513623539 is an equidigital number, since it uses as much as digits as its factorization.

11512513623539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 729000, while the sum is 47.

The spelling of 11512513623539 in words is "eleven trillion, five hundred twelve billion, five hundred thirteen million, six hundred twenty-three thousand, five hundred thirty-nine".