445256054928664 has 64 divisors (see below), whose sum is σ = 964201672949760. Its totient is φ = 188808713579520.

The previous prime is 445256054928631. The next prime is 445256054928701. The reversal of 445256054928664 is 466829450652544.

It is a super-2 number, since 2×445256054928664² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445256054928593 and 445256054928602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10927209 + ... + 31779175.

It is an arithmetic number, because the mean of its divisors is an integer number (15065651139840).

Almost surely, 2^{445256054928664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445256054928664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482100836474880).

445256054928664 is an abundant number, since it is smaller than the sum of its proper divisors (518945618021096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445256054928664 is a wasteful number, since it uses less digits than its factorization.

445256054928664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20856008 (or 20856004 counting only the distinct ones).

The product of its (nonzero) digits is 1990656000, while the sum is 70.

The spelling of 445256054928664 in words is "four hundred forty-five trillion, two hundred fifty-six billion, fifty-four million, nine hundred twenty-eight thousand, six hundred sixty-four".