2643655296 has 64 divisors (see below), whose sum is σ = 7061623200. Its totient is φ = 876272640.

The previous prime is 2643655243. The next prime is 2643655337. The reversal of 2643655296 is 6925563462.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 49506 + ... + 87966.

Almost surely, 2^2643655296 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 2643655296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3530811600).

2643655296 is an abundant number, since it is smaller than the sum of its proper divisors (4417967904).

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

2643655296 is a wasteful number, since it uses less digits than its factorization.

2643655296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38657 (or 38645 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 48.

The square root of 2643655296 is about 51416.4885615500. The cubic root of 2643655296 is about 1382.7222215915.

The spelling of 2643655296 in words is "two billion, six hundred forty-three million, six hundred fifty-five thousand, two hundred ninety-six".