117917181400 has 48 divisors (see below), whose sum is σ = 279990606240. Its totient is φ = 46163318400.

The previous prime is 117917181383. The next prime is 117917181401. The reversal of 117917181400 is 4181719711.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117917181401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6262791 + ... + 6281590.

It is an arithmetic number, because the mean of its divisors is an integer number (5833137630).

Almost surely, 2^117917181400 is an apocalyptic number.

117917181400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117917181400 is an abundant number, since it is smaller than the sum of its proper divisors (162073424840).

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

117917181400 is a wasteful number, since it uses less digits than its factorization.

117917181400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12544444 (or 12544435 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 40.

The spelling of 117917181400 in words is "one hundred seventeen billion, nine hundred seventeen million, one hundred eighty-one thousand, four hundred".