2115810781180 has 48 divisors (see below), whose sum is σ = 4463993358720. Its totient is φ = 842366212928.

The previous prime is 2115810781171. The next prime is 2115810781213. The reversal of 2115810781180 is 811870185112.

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, 17094999 + ... + 17218321.

It is an arithmetic number, because the mean of its divisors is an integer number (92999861640).

Almost surely, 2^{2115810781180} is an apocalyptic number.

2115810781180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115810781180 is an abundant number, since it is smaller than the sum of its proper divisors (2348182577540).

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

2115810781180 is a wasteful number, since it uses less digits than its factorization.

2115810781180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127338 (or 127336 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 43.

The spelling of 2115810781180 in words is "two trillion, one hundred fifteen billion, eight hundred ten million, seven hundred eighty-one thousand, one hundred eighty".