13116109553 has 2 divisors, whose sum is σ = 13116109554. Its totient is φ = 13116109552.

The previous prime is 13116109493. The next prime is 13116109577. The reversal of 13116109553 is 35590161131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10522040929 + 2594068624 = 102577^2 + 50932^2 .

It is a cyclic number.

It is not a de Polignac number, because 13116109553 - 2²⁸ = 12847674097 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 (13116109453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558054776 + 6558054777.

It is an arithmetic number, because the mean of its divisors is an integer number (6558054777).

Almost surely, 2^13116109553 is an apocalyptic number.

13116109553 is the 61217-th centered heptagonal number.

It is an amenable number.

13116109553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13116109553 is an equidigital number, since it uses as much as digits as its factorization.

13116109553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The spelling of 13116109553 in words is "thirteen billion, one hundred sixteen million, one hundred nine thousand, five hundred fifty-three".