5665561056512 has 36 divisors (see below), whose sum is σ = 12924561164256. Its totient is φ = 2428097594880.

The previous prime is 5665561056403. The next prime is 5665561056517. The reversal of 5665561056512 is 2156501655665.

It is a super-2 number, since 2×5665561056512² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665561056517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580790914 + ... + 1580794497.

It is an arithmetic number, because the mean of its divisors is an integer number (359015587896).

Almost surely, 2^{5665561056512} is an apocalyptic number.

It is an amenable number.

5665561056512 is an abundant number, since it is smaller than the sum of its proper divisors (7259000107744).

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

5665561056512 is an equidigital number, since it uses as much as digits as its factorization.

5665561056512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161585434 (or 3161585420 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 53.

The spelling of 5665561056512 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, fifty-six thousand, five hundred twelve".