111388965713 has 2 divisors, whose sum is σ = 111388965714. Its totient is φ = 111388965712.

The previous prime is 111388965691. The next prime is 111388965749. The reversal of 111388965713 is 317569883111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68493170944 + 42895794769 = 261712^2 + 207113^2 .

It is a cyclic number.

It is not a de Polignac number, because 111388965713 - 2¹² = 111388961617 is a prime.

It is a super-2 number, since 2×111388965713² (a number of 23 digits) contains 22 as substring.

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 (111388965773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55694482856 + 55694482857.

It is an arithmetic number, because the mean of its divisors is an integer number (55694482857).

Almost surely, 2^111388965713 is an apocalyptic number.

It is an amenable number.

111388965713 is a deficient number, since it is larger than the sum of its proper divisors (1).

111388965713 is an equidigital number, since it uses as much as digits as its factorization.

111388965713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The spelling of 111388965713 in words is "one hundred eleven billion, three hundred eighty-eight million, nine hundred sixty-five thousand, seven hundred thirteen".