445746372505221 has 8 divisors (see below), whose sum is σ = 594438171634720. Its totient is φ = 297109410856272.

The previous prime is 445746372505183. The next prime is 445746372505283. The reversal of 445746372505221 is 122505273647544.

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

It is not a de Polignac number, because 445746372505221 - 2¹³ = 445746372497029 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 (445746372405221) 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, 13709351170 + ... + 13709383683.

It is an arithmetic number, because the mean of its divisors is an integer number (74304771454340).

Almost surely, 2^{445746372505221} is an apocalyptic number.

It is an amenable number.

445746372505221 is a deficient number, since it is larger than the sum of its proper divisors (148691799129499).

445746372505221 is a wasteful number, since it uses less digits than its factorization.

445746372505221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27418740275.

The product of its (nonzero) digits is 56448000, while the sum is 57.

The spelling of 445746372505221 in words is "four hundred forty-five trillion, seven hundred forty-six billion, three hundred seventy-two million, five hundred five thousand, two hundred twenty-one".