2115566650680 has 128 divisors (see below), whose sum is σ = 7253793907200. Its totient is φ = 483529923072.

The previous prime is 2115566650679. The next prime is 2115566650709. The reversal of 2115566650680 is 860566655112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16613091 + ... + 16739949.

It is an arithmetic number, because the mean of its divisors is an integer number (56670264900).

Almost surely, 2^{2115566650680} is an apocalyptic number.

2115566650680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115566650680 is an abundant number, since it is smaller than the sum of its proper divisors (5138227256520).

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

2115566650680 is a wasteful number, since it uses less digits than its factorization.

2115566650680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146733 (or 146729 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 2115566650680 in words is "two trillion, one hundred fifteen billion, five hundred sixty-six million, six hundred fifty thousand, six hundred eighty".