117918751880 has 16 divisors (see below), whose sum is σ = 265317191820. Its totient is φ = 47167500736.

The previous prime is 117918751871. The next prime is 117918751889. The reversal of 117918751880 is 88157819711.

It is an interprime number because it is at equal distance from previous prime (117918751871) and next prime (117918751889).

It can be written as a sum of positive squares in 2 ways, for example, as 94380441796 + 23538310084 = 307214^2 + 153422^2 .

It is not an unprimeable number, because it can be changed into a prime (117918751889) 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, 1473984359 + ... + 1473984438.

Almost surely, 2^117918751880 is an apocalyptic number.

117918751880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117918751880 is an abundant number, since it is smaller than the sum of its proper divisors (147398439940).

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

117918751880 is a wasteful number, since it uses less digits than its factorization.

117918751880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947968808 (or 2947968804 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 56.

The spelling of 117918751880 in words is "one hundred seventeen billion, nine hundred eighteen million, seven hundred fifty-one thousand, eight hundred eighty".