445261723648 has 480 divisors, whose sum is σ = 1127556218880. Its totient is φ = 175250718720.

The previous prime is 445261723607. The next prime is 445261723651. The reversal of 445261723648 is 846327162544.

It is a junction number, because it is equal to n+sod(n) for n = 445261723595 and 445261723604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3505997761 + ... + 3505997887.

It is an arithmetic number, because the mean of its divisors is an integer number (2349075456).

Almost surely, 2^445261723648 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 445261723648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563778109440).

445261723648 is an abundant number, since it is smaller than the sum of its proper divisors (682294495232).

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

445261723648 is an equidigital number, since it uses as much as digits as its factorization.

445261723648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 190 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 52.

The spelling of 445261723648 in words is "four hundred forty-five billion, two hundred sixty-one million, seven hundred twenty-three thousand, six hundred forty-eight".