117578118721 has 8 divisors (see below), whose sum is σ = 135400757184. Its totient is φ = 100011921360.

The previous prime is 117578118701. The next prime is 117578118739. The reversal of 117578118721 is 127811875711.

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 117578118721 - 2²⁵ = 117544564289 is a prime.

It is a super-2 number, since 2×117578118721² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117578118701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64109290 + ... + 64111123.

It is an arithmetic number, because the mean of its divisors is an integer number (16925094648).

Almost surely, 2^117578118721 is an apocalyptic number.

It is an amenable number.

117578118721 is a deficient number, since it is larger than the sum of its proper divisors (17822638463).

117578118721 is a wasteful number, since it uses less digits than its factorization.

117578118721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128220551.

The product of its digits is 219520, while the sum is 49.

The spelling of 117578118721 in words is "one hundred seventeen billion, five hundred seventy-eight million, one hundred eighteen thousand, seven hundred twenty-one".