6602057885809 has 9 divisors (see below), whose sum is σ = 6611091551883. Its totient is φ = 6593036557392.

The previous prime is 6602057885729. The next prime is 6602057885869. The reversal of 6602057885809 is 9085887502066.

The square root of 6602057885809 is 2569447.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4920699610225 + 1681358275584 = 2218265^2 + 1296672^2 .

It is not a de Polignac number, because 6602057885809 - 2²³ = 6602049497201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6602057885869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2669654197 + ... + 2669656669.

It is an arithmetic number, because the mean of its divisors is an integer number (734565727987).

Almost surely, 2^{6602057885809} is an apocalyptic number.

6602057885809 is the 2569447-th square number.

6602057885809 is the 1284724-th centered octagonal number.

It is an amenable number.

6602057885809 is a deficient number, since it is larger than the sum of its proper divisors (9033666074).

6602057885809 is an frugal number, since it uses more digits than its factorization.

6602057885809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024 (or 3512 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 64.

Multiplying 6602057885809 by its sum of digits (64), we get a square (422531704691776 = 20555576²).

The spelling of 6602057885809 in words is "six trillion, six hundred two billion, fifty-seven million, eight hundred eighty-five thousand, eight hundred nine".