445428705686 has 16 divisors (see below), whose sum is σ = 668710144368. Its totient is φ = 222525408000.

The previous prime is 445428705671. The next prime is 445428705721. The reversal of 445428705686 is 686507824544.

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 7 ways as a sum of consecutive naturals, for example, 12042641 + ... + 12079571.

It is an arithmetic number, because the mean of its divisors is an integer number (41794384023).

Almost surely, 2^445428705686 is an apocalyptic number.

445428705686 is a deficient number, since it is larger than the sum of its proper divisors (223281438682).

445428705686 is a wasteful number, since it uses less digits than its factorization.

445428705686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41887.

The product of its (nonzero) digits is 51609600, while the sum is 59.

The spelling of 445428705686 in words is "four hundred forty-five billion, four hundred twenty-eight million, seven hundred five thousand, six hundred eighty-six".