117291396872 has 128 divisors (see below), whose sum is σ = 250338211200. Its totient is φ = 51159693312.

The previous prime is 117291396773. The next prime is 117291396899. The reversal of 117291396872 is 278693192711.

It is a super-2 number, since 2×117291396872² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17298779 + ... + 17305557.

It is an arithmetic number, because the mean of its divisors is an integer number (1955767275).

Almost surely, 2^117291396872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117291396872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125169105600).

117291396872 is an abundant number, since it is smaller than the sum of its proper divisors (133046814328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117291396872 is a wasteful number, since it uses less digits than its factorization.

117291396872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967 (or 6963 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 56.

The spelling of 117291396872 in words is "one hundred seventeen billion, two hundred ninety-one million, three hundred ninety-six thousand, eight hundred seventy-two".