2640869106 has 32 divisors (see below), whose sum is σ = 5455392768. Its totient is φ = 851381520.

The previous prime is 2640869093. The next prime is 2640869111. The reversal of 2640869106 is 6019680462.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418531 + ... + 424793.

It is an arithmetic number, because the mean of its divisors is an integer number (170481024).

Almost surely, 2^2640869106 is an apocalyptic number.

2640869106 is an abundant number, since it is smaller than the sum of its proper divisors (2814523662).

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

2640869106 is a wasteful number, since it uses less digits than its factorization.

2640869106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8566.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 2640869106 is about 51389.3870950024. The cubic root of 2640869106 is about 1382.2362932586.

The spelling of 2640869106 in words is "two billion, six hundred forty million, eight hundred sixty-nine thousand, one hundred six".