2640325166 has 16 divisors (see below), whose sum is σ = 4029318000. Its totient is φ = 1297238208.

The previous prime is 2640325151. The next prime is 2640325183. The reversal of 2640325166 is 6615230462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546176 + ... + 550988.

It is an arithmetic number, because the mean of its divisors is an integer number (251832375).

Almost surely, 2^2640325166 is an apocalyptic number.

2640325166 is a deficient number, since it is larger than the sum of its proper divisors (1388992834).

2640325166 is a wasteful number, since it uses less digits than its factorization.

2640325166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2640325166 is about 51384.0944845776. The cubic root of 2640325166 is about 1382.1413869727.

The spelling of 2640325166 in words is "two billion, six hundred forty million, three hundred twenty-five thousand, one hundred sixty-six".