2644052668 has 12 divisors (see below), whose sum is σ = 4705517880. Its totient is φ = 1299618992.

The previous prime is 2644052657. The next prime is 2644052689. The reversal of 2644052668 is 8662504462.

2644052668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2644052668² = 13982029022315836448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5601571 + ... + 5602042.

It is an arithmetic number, because the mean of its divisors is an integer number (392126490).

Almost surely, 2^2644052668 is an apocalyptic number.

It is an amenable number.

2644052668 is a deficient number, since it is larger than the sum of its proper divisors (2061465212).

2644052668 is a wasteful number, since it uses less digits than its factorization.

2644052668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203676 (or 11203674 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The square root of 2644052668 is about 51420.3526631236. The cubic root of 2644052668 is about 1382.7914978405.

The spelling of 2644052668 in words is "two billion, six hundred forty-four million, fifty-two thousand, six hundred sixty-eight".