117236236809 has 4 divisors (see below), whose sum is σ = 156314982416. Its totient is φ = 78157491204.

The previous prime is 117236236787. The next prime is 117236236837. The reversal of 117236236809 is 908632632711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 117236236809 - 2¹² = 117236232713 is a prime.

It is a super-2 number, since 2×117236236809² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117236236849) 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, 19539372799 + ... + 19539372804.

It is an arithmetic number, because the mean of its divisors is an integer number (39078745604).

Almost surely, 2^117236236809 is an apocalyptic number.

It is an amenable number.

117236236809 is a deficient number, since it is larger than the sum of its proper divisors (39078745607).

117236236809 is an equidigital number, since it uses as much as digits as its factorization.

117236236809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39078745606.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 117236236809 in words is "one hundred seventeen billion, two hundred thirty-six million, two hundred thirty-six thousand, eight hundred nine".