117511011721 has 8 divisors (see below), whose sum is σ = 118191981600. Its totient is φ = 116830314240.

The previous prime is 117511011697. The next prime is 117511011733. The reversal of 117511011721 is 127110115711.

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 117511011721 - 2⁵ = 117511011689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117511011721.

It is not an unprimeable number, because it can be changed into a prime (117511011421) 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, 831465 + ... + 962473.

It is an arithmetic number, because the mean of its divisors is an integer number (14773997700).

Almost surely, 2^117511011721 is an apocalyptic number.

It is an amenable number.

117511011721 is a deficient number, since it is larger than the sum of its proper divisors (680969879).

117511011721 is a wasteful number, since it uses less digits than its factorization.

117511011721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136199.

The product of its (nonzero) digits is 490, while the sum is 28.

The spelling of 117511011721 in words is "one hundred seventeen billion, five hundred eleven million, eleven thousand, seven hundred twenty-one".