117658201812 has 48 divisors (see below), whose sum is σ = 284326060032. Its totient is φ = 37844299360.

The previous prime is 117658201769. The next prime is 117658201847. The reversal of 117658201812 is 218102856711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1429068 + ... + 1509155.

It is an arithmetic number, because the mean of its divisors is an integer number (5923459584).

Almost surely, 2^117658201812 is an apocalyptic number.

117658201812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117658201812 is an abundant number, since it is smaller than the sum of its proper divisors (166667858220).

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

117658201812 is a wasteful number, since it uses less digits than its factorization.

117658201812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938348 (or 2938346 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 42.

The spelling of 117658201812 in words is "one hundred seventeen billion, six hundred fifty-eight million, two hundred one thousand, eight hundred twelve".