5656111664 has 80 divisors (see below), whose sum is σ = 12812608512. Its totient is φ = 2368614144.

The previous prime is 5656111661. The next prime is 5656111687. The reversal of 5656111664 is 4661116565.

It is not an unprimeable number, because it can be changed into a prime (5656111661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1559357 + ... + 1562979.

Almost surely, 2^5656111664 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 5656111664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6406304256).

5656111664 is an abundant number, since it is smaller than the sum of its proper divisors (7156496848).

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

5656111664 is a wasteful number, since it uses less digits than its factorization.

5656111664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954 (or 3948 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 5656111664 is about 75207.1250879862. The cubic root of 5656111664 is about 1781.7194662777.

The spelling of 5656111664 in words is "five billion, six hundred fifty-six million, one hundred eleven thousand, six hundred sixty-four".