111660657753777 has 72 divisors (see below), whose sum is σ = 172737876255840. Its totient is φ = 64101843590400.

The previous prime is 111660657753773. The next prime is 111660657753781. The reversal of 111660657753777 is 777357756066111.

It is an interprime number because it is at equal distance from previous prime (111660657753773) and next prime (111660657753781).

It is not a de Polignac number, because 111660657753777 - 2² = 111660657753773 is a prime.

It is a super-3 number, since 3×111660657753777³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (111660657753773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 933097374 + ... + 933217032.

It is an arithmetic number, because the mean of its divisors is an integer number (2399137170220).

Almost surely, 2^{111660657753777} is an apocalyptic number.

It is an amenable number.

111660657753777 is a deficient number, since it is larger than the sum of its proper divisors (61077218502063).

111660657753777 is a wasteful number, since it uses less digits than its factorization.

111660657753777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126843 (or 126813 counting only the distinct ones).

The product of its (nonzero) digits is 272273400, while the sum is 69.

The spelling of 111660657753777 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred fifty-seven million, seven hundred fifty-three thousand, seven hundred seventy-seven".