2553346644 has 72 divisors (see below), whose sum is σ = 6227719680. Its totient is φ = 814130688.

The previous prime is 2553346643. The next prime is 2553346681. The reversal of 2553346644 is 4466433552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2553346596 and 2553346605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553346643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1139277 + ... + 1141515.

Almost surely, 2^2553346644 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 2553346644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3113859840).

2553346644 is an abundant number, since it is smaller than the sum of its proper divisors (3674373036).

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

2553346644 is a wasteful number, since it uses less digits than its factorization.

2553346644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2386 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 42.

The square root of 2553346644 is about 50530.6505400435. The cubic root of 2553346644 is about 1366.7946167998.

The spelling of 2553346644 in words is "two billion, five hundred fifty-three million, three hundred forty-six thousand, six hundred forty-four".