665434514307 has 4 divisors (see below), whose sum is σ = 887246019080. Its totient is φ = 443623009536.

The previous prime is 665434514281. The next prime is 665434514321. The reversal of 665434514307 is 703415434566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 665434514307 - 2¹⁰ = 665434513283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665434514377) 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, 110905752382 + ... + 110905752387.

It is an arithmetic number, because the mean of its divisors is an integer number (221811504770).

Almost surely, 2^665434514307 is an apocalyptic number.

665434514307 is a deficient number, since it is larger than the sum of its proper divisors (221811504773).

665434514307 is a wasteful number, since it uses less digits than its factorization.

665434514307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221811504772.

The product of its (nonzero) digits is 3628800, while the sum is 48.

The spelling of 665434514307 in words is "six hundred sixty-five billion, four hundred thirty-four million, five hundred fourteen thousand, three hundred seven".