445328820035778 has 128 divisors (see below), whose sum is σ = 1061336857706496. Its totient is φ = 121936667328000.

The previous prime is 445328820035753. The next prime is 445328820035791. The reversal of 445328820035778 is 877530028823544.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12007351 + ... + 32168837.

It is an arithmetic number, because the mean of its divisors is an integer number (8291694200832).

Almost surely, 2^{445328820035778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445328820035778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530668428853248).

445328820035778 is an abundant number, since it is smaller than the sum of its proper divisors (616008037670718).

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

445328820035778 is a wasteful number, since it uses less digits than its factorization.

445328820035778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20161768.

The product of its (nonzero) digits is 361267200, while the sum is 66.

The spelling of 445328820035778 in words is "four hundred forty-five trillion, three hundred twenty-eight billion, eight hundred twenty million, thirty-five thousand, seven hundred seventy-eight".