2560143666 has 16 divisors (see below), whose sum is σ = 5121476064. Its totient is φ = 853183104.

The previous prime is 2560143661. The next prime is 2560143667. The reversal of 2560143666 is 6663410652.

It is not an unprimeable number, because it can be changed into a prime (2560143661) by changing a digit.

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, 20196 + ... + 74351.

It is an arithmetic number, because the mean of its divisors is an integer number (320092254).

Almost surely, 2^2560143666 is an apocalyptic number.

2560143666 is an abundant number, since it is smaller than the sum of its proper divisors (2561332398).

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

2560143666 is a wasteful number, since it uses less digits than its factorization.

2560143666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99065.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 2560143666 is about 50597.8622670958. The cubic root of 2560143666 is about 1368.0063470090.

The spelling of 2560143666 in words is "two billion, five hundred sixty million, one hundred forty-three thousand, six hundred sixty-six".