2665222180 has 24 divisors (see below), whose sum is σ = 5600343672. Its totient is φ = 1065445632.

The previous prime is 2665222171. The next prime is 2665222193. The reversal of 2665222180 is 812225662.

It can be written as a sum of positive squares in 4 ways, for example, as 320338404 + 2344883776 = 17898^2 + 48424^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5497 + ... + 73216.

It is an arithmetic number, because the mean of its divisors is an integer number (233347653).

Almost surely, 2^2665222180 is an apocalyptic number.

2665222180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665222180 is an abundant number, since it is smaller than the sum of its proper divisors (2935121492).

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

2665222180 is a wasteful number, since it uses less digits than its factorization.

2665222180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80415 (or 80413 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 2665222180 is about 51625.7898728920. The cubic root of 2665222180 is about 1386.4721156984.

The spelling of 2665222180 in words is "two billion, six hundred sixty-five million, two hundred twenty-two thousand, one hundred eighty".