11886457117 has 2 divisors, whose sum is σ = 11886457118. Its totient is φ = 11886457116.

The previous prime is 11886457111. The next prime is 11886457129. The reversal of 11886457117 is 71175468811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6857661721 + 5028795396 = 82811^2 + 70914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11886457117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11886457111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5943228558 + 5943228559.

It is an arithmetic number, because the mean of its divisors is an integer number (5943228559).

Almost surely, 2^11886457117 is an apocalyptic number.

It is an amenable number.

11886457117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11886457117 is an equidigital number, since it uses as much as digits as its factorization.

11886457117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 49.

The spelling of 11886457117 in words is "eleven billion, eight hundred eighty-six million, four hundred fifty-seven thousand, one hundred seventeen".