2640443622 has 16 divisors (see below), whose sum is σ = 5282494272. Its totient is φ = 879880040.

The previous prime is 2640443593. The next prime is 2640443633. The reversal of 2640443622 is 2263440462.

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, 45048 + ... + 85499.

It is an arithmetic number, because the mean of its divisors is an integer number (330155892).

Almost surely, 2^2640443622 is an apocalyptic number.

2640443622 is an abundant number, since it is smaller than the sum of its proper divisors (2642050650).

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

2640443622 is a wasteful number, since it uses less digits than its factorization.

2640443622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133923.

The product of its (nonzero) digits is 55296, while the sum is 33.

The square root of 2640443622 is about 51385.2471240530. The cubic root of 2640443622 is about 1382.1620562062.

The spelling of 2640443622 in words is "two billion, six hundred forty million, four hundred forty-three thousand, six hundred twenty-two".