445434560639 has 4 divisors (see below), whose sum is σ = 445685229024. Its totient is φ = 445183892256.

The previous prime is 445434560629. The next prime is 445434560647. The reversal of 445434560639 is 936065434544.

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

It is a cyclic number.

It is not a de Polignac number, because 445434560639 - 2²⁴ = 445417783423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445434560629) 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, 125331527 + ... + 125335080.

It is an arithmetic number, because the mean of its divisors is an integer number (111421307256).

Almost surely, 2^445434560639 is an apocalyptic number.

445434560639 is a deficient number, since it is larger than the sum of its proper divisors (250668385).

445434560639 is a wasteful number, since it uses less digits than its factorization.

445434560639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250668384.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 445434560639 in words is "four hundred forty-five billion, four hundred thirty-four million, five hundred sixty thousand, six hundred thirty-nine".