6618365865580 has 48 divisors (see below), whose sum is σ = 15888134558016. Its totient is φ = 2268574513920.

The previous prime is 6618365865571. The next prime is 6618365865619. The reversal of 6618365865580 is 855685638166.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5486091 + ... + 6582850.

It is an arithmetic number, because the mean of its divisors is an integer number (331002803292).

Almost surely, 2^{6618365865580} is an apocalyptic number.

It is an amenable number.

6618365865580 is an abundant number, since it is smaller than the sum of its proper divisors (9269768692436).

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

6618365865580 is a wasteful number, since it uses less digits than its factorization.

6618365865580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072874 (or 12072872 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 67.

The spelling of 6618365865580 in words is "six trillion, six hundred eighteen billion, three hundred sixty-five million, eight hundred sixty-five thousand, five hundred eighty".