445317351780 has 288 divisors, whose sum is σ = 1539901238400. Its totient is φ = 95542530048.

The previous prime is 445317351757. The next prime is 445317351863. The reversal of 445317351780 is 87153713544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18930666 + ... + 18954174.

It is an arithmetic number, because the mean of its divisors is an integer number (5346879300).

Almost surely, 2^445317351780 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 445317351780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769950619200).

445317351780 is an abundant number, since it is smaller than the sum of its proper divisors (1094583886620).

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

445317351780 is a wasteful number, since it uses less digits than its factorization.

445317351780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23931 (or 23922 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 445317351780 in words is "four hundred forty-five billion, three hundred seventeen million, three hundred fifty-one thousand, seven hundred eighty".