2656322128 has 20 divisors (see below), whose sum is σ = 5154957760. Its totient is φ = 1326010464.

The previous prime is 2656322117. The next prime is 2656322143. The reversal of 2656322128 is 8212236562.

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, 124200 + ... + 144007.

It is an arithmetic number, because the mean of its divisors is an integer number (257747888).

Almost surely, 2^2656322128 is an apocalyptic number.

It is an amenable number.

2656322128 is a deficient number, since it is larger than the sum of its proper divisors (2498635632).

2656322128 is a wasteful number, since it uses less digits than its factorization.

2656322128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268834 (or 268828 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 2656322128 is about 51539.5200598531. The cubic root of 2656322128 is about 1384.9270994311.

The spelling of 2656322128 in words is "two billion, six hundred fifty-six million, three hundred twenty-two thousand, one hundred twenty-eight".