2656051644 has 48 divisors (see below), whose sum is σ = 6583133088. Its totient is φ = 830588928.

The previous prime is 2656051633. The next prime is 2656051663. The reversal of 2656051644 is 4461506562.

It is a super-2 number, since 2×2656051644² = 14109220671190205472, 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 15 ways as a sum of consecutive naturals, for example, 43054 + ... + 84650.

It is an arithmetic number, because the mean of its divisors is an integer number (137148606).

Almost surely, 2^2656051644 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 2656051644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3291566544).

2656051644 is an abundant number, since it is smaller than the sum of its proper divisors (3927081444).

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

2656051644 is a wasteful number, since it uses less digits than its factorization.

2656051644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41934 (or 41932 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 2656051644 is about 51536.8959484368. The cubic root of 2656051644 is about 1384.8800904065.

The spelling of 2656051644 in words is "two billion, six hundred fifty-six million, fifty-one thousand, six hundred forty-four".