445773221228446 has 8 divisors (see below), whose sum is σ = 668662535999160. Its totient is φ = 222885709228728.

The previous prime is 445773221228437. The next prime is 445773221228507. The reversal of 445773221228446 is 644822122377544.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450074401 + ... + 451063756.

It is an arithmetic number, because the mean of its divisors is an integer number (83582816999895).

Almost surely, 2^{445773221228446} is an apocalyptic number.

445773221228446 is a deficient number, since it is larger than the sum of its proper divisors (222889314770714).

445773221228446 is a wasteful number, since it uses less digits than its factorization.

445773221228446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901385498.

The product of its digits is 144506880, while the sum is 61.

The spelling of 445773221228446 in words is "four hundred forty-five trillion, seven hundred seventy-three billion, two hundred twenty-one million, two hundred twenty-eight thousand, four hundred forty-six".