111479117917 has 2 divisors, whose sum is σ = 111479117918. Its totient is φ = 111479117916.

The previous prime is 111479117861. The next prime is 111479117963. The reversal of 111479117917 is 719711974111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111079557796 + 399560121 = 333286^2 + 19989^2 .

It is a cyclic number.

It is not a de Polignac number, because 111479117917 - 2²³ = 111470729309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111479117017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55739558958 + 55739558959.

It is an arithmetic number, because the mean of its divisors is an integer number (55739558959).

Almost surely, 2^111479117917 is an apocalyptic number.

It is an amenable number.

111479117917 is a deficient number, since it is larger than the sum of its proper divisors (1).

111479117917 is an equidigital number, since it uses as much as digits as its factorization.

111479117917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 49.

The spelling of 111479117917 in words is "one hundred eleven billion, four hundred seventy-nine million, one hundred seventeen thousand, nine hundred seventeen".