2645344736 has 48 divisors (see below), whose sum is σ = 5438165040. Its totient is φ = 1265080320.

The previous prime is 2645344733. The next prime is 2645344753. The reversal of 2645344736 is 6374435462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645344733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85976 + ... + 112616.

It is an arithmetic number, because the mean of its divisors is an integer number (113295105).

Almost surely, 2^2645344736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645344736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2719082520).

2645344736 is an abundant number, since it is smaller than the sum of its proper divisors (2792820304).

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

2645344736 is a wasteful number, since it uses less digits than its factorization.

2645344736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26787 (or 26779 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 44.

The square root of 2645344736 is about 51432.9149086458. The cubic root of 2645344736 is about 1383.0167038556.

The spelling of 2645344736 in words is "two billion, six hundred forty-five million, three hundred forty-four thousand, seven hundred thirty-six".