2161760081260 has 24 divisors (see below), whose sum is σ = 4888903568976. Its totient is φ = 798188337600.

The previous prime is 2161760081231. The next prime is 2161760081267. The reversal of 2161760081260 is 621800671612.

It is not an unprimeable number, because it can be changed into a prime (2161760081267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4157230666 + ... + 4157231185.

It is an arithmetic number, because the mean of its divisors is an integer number (203704315374).

Almost surely, 2^{2161760081260} is an apocalyptic number.

2161760081260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2161760081260 is an abundant number, since it is smaller than the sum of its proper divisors (2727143487716).

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

2161760081260 is a wasteful number, since it uses less digits than its factorization.

2161760081260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8314461873 (or 8314461871 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 2161760081260 in words is "two trillion, one hundred sixty-one billion, seven hundred sixty million, eighty-one thousand, two hundred sixty".