117817273926 has 320 divisors, whose sum is σ = 324157489920. Its totient is φ = 31519549440.

The previous prime is 117817273901. The next prime is 117817273961. The reversal of 117817273926 is 629372718711.

117817273926 is a `hidden beast` number, since 11 + 78 + 172 + 7 + 392 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 61586746 + ... + 61588658.

It is an arithmetic number, because the mean of its divisors is an integer number (1012992156).

Almost surely, 2^117817273926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117817273926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162078744960).

117817273926 is an abundant number, since it is smaller than the sum of its proper divisors (206340215994).

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

117817273926 is a wasteful number, since it uses less digits than its factorization.

117817273926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2072 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The spelling of 117817273926 in words is "one hundred seventeen billion, eight hundred seventeen million, two hundred seventy-three thousand, nine hundred twenty-six".