566644162223620 has 96 divisors (see below), whose sum is σ = 1325686563180000. Its totient is φ = 202006403579904.

The previous prime is 566644162223611. The next prime is 566644162223647. The reversal of 566644162223620 is 26322261446665.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 394247472303556 + 172396689920064 = 19855666^2 + 13129992^2 .

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, 1792469412 + ... + 1792785508.

It is an arithmetic number, because the mean of its divisors is an integer number (13809235033125).

Almost surely, 2^{566644162223620} is an apocalyptic number.

It is an amenable number.

566644162223620 is an abundant number, since it is smaller than the sum of its proper divisors (759042400956380).

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

566644162223620 is a wasteful number, since it uses less digits than its factorization.

566644162223620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553897 (or 553895 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 55.

The spelling of 566644162223620 in words is "five hundred sixty-six trillion, six hundred forty-four billion, one hundred sixty-two million, two hundred twenty-three thousand, six hundred twenty".