11287513117 has 2 divisors, whose sum is σ = 11287513118. Its totient is φ = 11287513116.

The previous prime is 11287513109. The next prime is 11287513123. The reversal of 11287513117 is 71131578211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10748298276 + 539214841 = 103674^2 + 23221^2 .

It is a cyclic number.

It is not a de Polignac number, because 11287513117 - 2³ = 11287513109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11287513157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5643756558 + 5643756559.

It is an arithmetic number, because the mean of its divisors is an integer number (5643756559).

Almost surely, 2^11287513117 is an apocalyptic number.

It is an amenable number.

11287513117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11287513117 is an equidigital number, since it uses as much as digits as its factorization.

11287513117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 37.

The spelling of 11287513117 in words is "eleven billion, two hundred eighty-seven million, five hundred thirteen thousand, one hundred seventeen".