5644656456 has 128 divisors (see below), whose sum is σ = 14653249920. Its totient is φ = 1811124224.

The previous prime is 5644656449. The next prime is 5644656463. The reversal of 5644656456 is 6546564465.

It is an interprime number because it is at equal distance from previous prime (5644656449) and next prime (5644656463).

It is a junction number, because it is equal to n+sod(n) for n = 5644656399 and 5644656408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24866215 + ... + 24866441.

It is an arithmetic number, because the mean of its divisors is an integer number (114478515).

Almost surely, 2^5644656456 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 5644656456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7326624960).

5644656456 is an abundant number, since it is smaller than the sum of its proper divisors (9008593464).

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

5644656456 is a wasteful number, since it uses less digits than its factorization.

5644656456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 571 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 51.

The square root of 5644656456 is about 75130.9287577360. The cubic root of 5644656456 is about 1780.5158266013.

The spelling of 5644656456 in words is "five billion, six hundred forty-four million, six hundred fifty-six thousand, four hundred fifty-six".