116221775688 has 36 divisors (see below), whose sum is σ = 314775143865. Its totient is φ = 38739627648.

The previous prime is 116221775669. The next prime is 116221775689. The reversal of 116221775688 is 886577122611.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

116221775688 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 2 + 1 + 77 + 568 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84950097444 + 31271678244 = 291462^2 + 176838^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=241062.

It is a super-2 number, since 2×116221775688² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116221775689) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2872656 + ... + 2912832.

Almost surely, 2^116221775688 is an apocalyptic number.

116221775688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

116221775688 is an abundant number, since it is smaller than the sum of its proper divisors (198553368177).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116221775688 is an frugal number, since it uses more digits than its factorization.

116221775688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80366 (or 40182 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 116221775688 in words is "one hundred sixteen billion, two hundred twenty-one million, seven hundred seventy-five thousand, six hundred eighty-eight".