111691357907 has 8 divisors (see below), whose sum is σ = 113851352160. Its totient is φ = 109547665920.

The previous prime is 111691357879. The next prime is 111691357927. The reversal of 111691357907 is 709753196111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111691357907 - 2¹⁰ = 111691356883 is a prime.

It is a super-2 number, since 2×111691357907² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111691357927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4061732 + ... + 4089137.

It is an arithmetic number, because the mean of its divisors is an integer number (14231419020).

Almost surely, 2^111691357907 is an apocalyptic number.

111691357907 is a deficient number, since it is larger than the sum of its proper divisors (2159994253).

111691357907 is an equidigital number, since it uses as much as digits as its factorization.

111691357907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151133.

The product of its (nonzero) digits is 357210, while the sum is 50.

The spelling of 111691357907 in words is "one hundred eleven billion, six hundred ninety-one million, three hundred fifty-seven thousand, nine hundred seven".