665005567268 has 12 divisors (see below), whose sum is σ = 1330011134592. Its totient is φ = 285002385960.

The previous prime is 665005567267. The next prime is 665005567297. The reversal of 665005567268 is 862765500566.

665005567268 is an admirable number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (665005567267) 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, 11875099388 + ... + 11875099443.

It is an arithmetic number, because the mean of its divisors is an integer number (110834261216).

Almost surely, 2^665005567268 is an apocalyptic number.

It is an amenable number.

665005567268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

665005567268 is a wasteful number, since it uses less digits than its factorization.

665005567268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23750198842 (or 23750198840 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 665005567268 in words is "six hundred sixty-five billion, five million, five hundred sixty-seven thousand, two hundred sixty-eight".