665341288822 has 16 divisors (see below), whose sum is σ = 1149566054400. Its totient is φ = 282901019688.

The previous prime is 665341288817. The next prime is 665341288877. The reversal of 665341288822 is 228882143566.

It is a super-2 number, since 2×665341288822² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 187102072 + ... + 187105627.

It is an arithmetic number, because the mean of its divisors is an integer number (71847878400).

Almost surely, 2^665341288822 is an apocalyptic number.

665341288822 is a deficient number, since it is larger than the sum of its proper divisors (484224765578).

665341288822 is a wasteful number, since it uses less digits than its factorization.

665341288822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374207835.

The product of its digits is 8847360, while the sum is 55.

The spelling of 665341288822 in words is "six hundred sixty-five billion, three hundred forty-one million, two hundred eighty-eight thousand, eight hundred twenty-two".