11413551557 has 2 divisors, whose sum is σ = 11413551558. Its totient is φ = 11413551556.

The previous prime is 11413551521. The next prime is 11413551571. The reversal of 11413551557 is 75515531411.

11413551557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5783450401 + 5630101156 = 76049^2 + 75034^2 .

It is a cyclic number.

It is not a de Polignac number, because 11413551557 - 2⁸ = 11413551301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11413551557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11413551517) 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, 5706775778 + 5706775779.

It is an arithmetic number, because the mean of its divisors is an integer number (5706775779).

Almost surely, 2^11413551557 is an apocalyptic number.

It is an amenable number.

11413551557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11413551557 is an equidigital number, since it uses as much as digits as its factorization.

11413551557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52500, while the sum is 38.

The spelling of 11413551557 in words is "eleven billion, four hundred thirteen million, five hundred fifty-one thousand, five hundred fifty-seven".