445947166580 has 18 divisors (see below), whose sum is σ = 936495321426. Its totient is φ = 178377672048.

The previous prime is 445947166549. The next prime is 445947166649. The reversal of 445947166580 is 85661749544.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 356757733264 + 89189433316 = 597292^2 + 298646^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2911799 + ... + 3061121.

It is an arithmetic number, because the mean of its divisors is an integer number (52027517857).

Almost surely, 2^445947166580 is an apocalyptic number.

It is an amenable number.

445947166580 is an abundant number, since it is smaller than the sum of its proper divisors (490548154846).

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

445947166580 is an frugal number, since it uses more digits than its factorization.

445947166580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298655 (or 149330 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 445947166580 in words is "four hundred forty-five billion, nine hundred forty-seven million, one hundred sixty-six thousand, five hundred eighty".