2112780416688 has 140 divisors (see below), whose sum is σ = 6303339061968. Its totient is φ = 685225941120.

The previous prime is 2112780416627. The next prime is 2112780416699. The reversal of 2112780416688 is 8866140872112.

2112780416688 is a `hidden beast` number, since 21 + 127 + 8 + 0 + 416 + 6 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2016228 + ... + 2879363.

Almost surely, 2^{2112780416688} is an apocalyptic number.

It is an amenable number.

2112780416688 is an abundant number, since it is smaller than the sum of its proper divisors (4190558645280).

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

2112780416688 is an equidigital number, since it uses as much as digits as its factorization.

2112780416688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895654 (or 4895633 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 2112780416688 in words is "two trillion, one hundred twelve billion, seven hundred eighty million, four hundred sixteen thousand, six hundred eighty-eight".