445379973544 has 128 divisors (see below), whose sum is σ = 952990375680. Its totient is φ = 193364582400.

The previous prime is 445379973397. The next prime is 445379973547.

It is a happy number.

445379973544 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (445379973547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36077437 + ... + 36089779.

It is an arithmetic number, because the mean of its divisors is an integer number (7445237310).

Almost surely, 2^445379973544 is an apocalyptic number.

445379973544 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445379973544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476495187840).

445379973544 is an abundant number, since it is smaller than the sum of its proper divisors (507610402136).

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

445379973544 is a wasteful number, since it uses less digits than its factorization.

445379973544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12611 (or 12607 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 64.

It can be divided in two parts, 4453 and 79973544, that added together give a palindrome (79977997).

The spelling of 445379973544 in words is "four hundred forty-five billion, three hundred seventy-nine million, nine hundred seventy-three thousand, five hundred forty-four".