5665660656160 has 96 divisors (see below), whose sum is σ = 13758822674352. Its totient is φ = 2203098808320.

The previous prime is 5665660656151. The next prime is 5665660656167. The reversal of 5665660656160 is 616560665665.

It can be written as a sum of positive squares in 8 ways, for example, as 5281741625616 + 383919030544 = 2298204^2 + 619612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5665660656095 and 5665660656104.

It is not an unprimeable number, because it can be changed into a prime (5665660656167) 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, 6410740 + ... + 7240780.

Almost surely, 2^{5665660656160} 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 5665660656160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6879411337176).

5665660656160 is an abundant number, since it is smaller than the sum of its proper divisors (8093162018192).

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

5665660656160 is a wasteful number, since it uses less digits than its factorization.

5665660656160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831246 (or 831238 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 58.

The spelling of 5665660656160 in words is "five trillion, six hundred sixty-five billion, six hundred sixty million, six hundred fifty-six thousand, one hundred sixty".