445666644445 has 32 divisors (see below), whose sum is σ = 587945433600. Its totient is φ = 321610583040.

The previous prime is 445666644407. The next prime is 445666644463. The reversal of 445666644445 is 544446666544.

It is not a de Polignac number, because 445666644445 - 2³¹ = 443519160797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445666644445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7978684 + ... + 8034346.

It is an arithmetic number, because the mean of its divisors is an integer number (18373294800).

Almost surely, 2^445666644445 is an apocalyptic number.

It is an amenable number.

445666644445 is a deficient number, since it is larger than the sum of its proper divisors (142278789155).

445666644445 is a wasteful number, since it uses less digits than its factorization.

445666644445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56805.

The product of its digits is 132710400, while the sum is 58.

The spelling of 445666644445 in words is "four hundred forty-five billion, six hundred sixty-six million, six hundred forty-four thousand, four hundred forty-five".