117656546121 has 27 divisors (see below), whose sum is σ = 174058005069. Its totient is φ = 76584751992.

The previous prime is 117656546107. The next prime is 117656546173. The reversal of 117656546121 is 121645656711.

The square root of 117656546121 is 343011.

It is a perfect power (a square), and thus also a powerful number.

117656546121 is a `hidden beast` number, since 1 + 1 + 7 + 6 + 565 + 4 + 61 + 21 = 666.

It is not a de Polignac number, because 117656546121 - 2⁵ = 117656546089 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117656546521) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44247090 + ... + 44249748.

Almost surely, 2^117656546121 is an apocalyptic number.

117656546121 is the 343011-st square number.

117656546121 is the 171506-th centered octagonal number.

It is an amenable number.

117656546121 is a deficient number, since it is larger than the sum of its proper divisors (56401458948).

117656546121 is an frugal number, since it uses more digits than its factorization.

117656546121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410 (or 2705 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 117656546121 in words is "one hundred seventeen billion, six hundred fifty-six million, five hundred forty-six thousand, one hundred twenty-one".