6665844120402 has 16 divisors (see below), whose sum is σ = 13345474900032. Its totient is φ = 2219650263600.

The previous prime is 6665844120391. The next prime is 6665844120427. The reversal of 6665844120402 is 2040214485666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574437849 + ... + 574449452.

It is an arithmetic number, because the mean of its divisors is an integer number (834092181252).

Almost surely, 2^{6665844120402} is an apocalyptic number.

6665844120402 is an abundant number, since it is smaller than the sum of its proper divisors (6679630779630).

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

6665844120402 is a wasteful number, since it uses less digits than its factorization.

6665844120402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148888273.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 6665844120402 in words is "six trillion, six hundred sixty-five billion, eight hundred forty-four million, one hundred twenty thousand, four hundred two".