11511185059553 has 2 divisors, whose sum is σ = 11511185059554. Its totient is φ = 11511185059552.

The previous prime is 11511185059471. The next prime is 11511185059601. The reversal of 11511185059553 is 35595058111511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10747427918929 + 763757140624 = 3278327^2 + 873932^2 .

It is a cyclic number.

It is not a de Polignac number, because 11511185059553 - 2³⁰ = 11510111317729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11511115059553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5755592529776 + 5755592529777.

It is an arithmetic number, because the mean of its divisors is an integer number (5755592529777).

Almost surely, 2^{11511185059553} is an apocalyptic number.

It is an amenable number.

11511185059553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11511185059553 is an equidigital number, since it uses as much as digits as its factorization.

11511185059553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675000, while the sum is 50.

The spelling of 11511185059553 in words is "eleven trillion, five hundred eleven billion, one hundred eighty-five million, fifty-nine thousand, five hundred fifty-three".