117983779290 has 192 divisors, whose sum is σ = 333234064800. Its totient is φ = 28790249472.

The previous prime is 117983779289. The next prime is 117983779313. The reversal of 117983779290 is 92977389711.

It is a happy number.

117983779290 is a `hidden beast` number, since 1 + 1 + 7 + 98 + 377 + 92 + 90 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 3848589369 + 114135189921 = 62037^2 + 337839^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72072352 + ... + 72073988.

Almost surely, 2^117983779290 is an apocalyptic number.

117983779290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117983779290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166617032400).

117983779290 is an abundant number, since it is smaller than the sum of its proper divisors (215250285510).

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

117983779290 is a wasteful number, since it uses less digits than its factorization.

117983779290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The spelling of 117983779290 in words is "one hundred seventeen billion, nine hundred eighty-three million, seven hundred seventy-nine thousand, two hundred ninety".