117891424880 has 20 divisors (see below), whose sum is σ = 274097563032. Its totient is φ = 47156569920.

The previous prime is 117891424841. The next prime is 117891424891. The reversal of 117891424880 is 88424198711.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736821326 + ... + 736821485.

Almost surely, 2^117891424880 is an apocalyptic number.

117891424880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117891424880 is an abundant number, since it is smaller than the sum of its proper divisors (156206138152).

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

117891424880 is a wasteful number, since it uses less digits than its factorization.

117891424880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473642824 (or 1473642818 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 117891424880 in words is "one hundred seventeen billion, eight hundred ninety-one million, four hundred twenty-four thousand, eight hundred eighty".