5665561016520 has 64 divisors (see below), whose sum is σ = 16996843825920. Its totient is φ = 1510801979904.

The previous prime is 5665561016519. The next prime is 5665561016587. The reversal of 5665561016520 is 256101655665.

It is a super-2 number, since 2×5665561016520² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5665561016520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20481372 + ... + 20756148.

It is an arithmetic number, because the mean of its divisors is an integer number (265575684780).

Almost surely, 2^{5665561016520} is an apocalyptic number.

It is an amenable number.

5665561016520 is an abundant number, since it is smaller than the sum of its proper divisors (11331282809400).

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

5665561016520 is a wasteful number, since it uses less digits than its factorization.

5665561016520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446614 (or 446610 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 5665561016520 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, sixteen thousand, five hundred twenty".