666365565276433 has 8 divisors (see below), whose sum is σ = 727072168679136. Its totient is φ = 605680281148800.

The previous prime is 666365565276431. The next prime is 666365565276503. The reversal of 666365565276433 is 334672565563666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666365565276433 - 2¹ = 666365565276431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666365565276431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5329753408 + ... + 5329878433.

It is an arithmetic number, because the mean of its divisors is an integer number (90884021084892).

Almost surely, 2^{666365565276433} is an apocalyptic number.

It is an amenable number.

666365565276433 is a deficient number, since it is larger than the sum of its proper divisors (60706603402703).

666365565276433 is a wasteful number, since it uses less digits than its factorization.

666365565276433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659637535.

The product of its digits is 8817984000, while the sum is 73.

The spelling of 666365565276433 in words is "six hundred sixty-six trillion, three hundred sixty-five billion, five hundred sixty-five million, two hundred seventy-six thousand, four hundred thirty-three".