117115643 has 4 divisors (see below), whose sum is σ = 117141888. Its totient is φ = 117089400.

The previous prime is 117115627. The next prime is 117115651. The reversal of 117115643 is 346511711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117115643 - 2⁴ = 117115627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117105643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4571 + ... + 15972.

It is an arithmetic number, because the mean of its divisors is an integer number (29285472).

Almost surely, 2^117115643 is an apocalyptic number.

117115643 is a deficient number, since it is larger than the sum of its proper divisors (26245).

117115643 is an equidigital number, since it uses as much as digits as its factorization.

117115643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26244.

The product of its digits is 2520, while the sum is 29.

The square root of 117115643 is about 10821.9981057104. The cubic root of 117115643 is about 489.2584131331.

The spelling of 117115643 in words is "one hundred seventeen million, one hundred fifteen thousand, six hundred forty-three".