13115394553 has 2 divisors, whose sum is σ = 13115394554. Its totient is φ = 13115394552.

The previous prime is 13115394503. The next prime is 13115394571. The reversal of 13115394553 is 35549351131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11995287529 + 1120107024 = 109523^2 + 33468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13115394553 is a prime.

It is not a weakly prime, because it can be changed into another prime (13115394503) 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, 6557697276 + 6557697277.

It is an arithmetic number, because the mean of its divisors is an integer number (6557697277).

Almost surely, 2^13115394553 is an apocalyptic number.

It is an amenable number.

13115394553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13115394553 is an equidigital number, since it uses as much as digits as its factorization.

13115394553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121500, while the sum is 40.

The spelling of 13115394553 in words is "thirteen billion, one hundred fifteen million, three hundred ninety-four thousand, five hundred fifty-three".