665434357392 has 120 divisors (see below), whose sum is σ = 2064204763392. Its totient is φ = 183991046400.

The previous prime is 665434357391. The next prime is 665434357411. The reversal of 665434357392 is 293753434566.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (665434357391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4490359 + ... + 4636182.

Almost surely, 2^665434357392 is an apocalyptic number.

665434357392 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

665434357392 is an abundant number, since it is smaller than the sum of its proper divisors (1398770406000).

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

665434357392 is a wasteful number, since it uses less digits than its factorization.

665434357392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9126597 (or 9126584 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 57.

The spelling of 665434357392 in words is "six hundred sixty-five billion, four hundred thirty-four million, three hundred fifty-seven thousand, three hundred ninety-two".