445815740785 has 4 divisors (see below), whose sum is σ = 534978888948. Its totient is φ = 356652592624.

The previous prime is 445815740749. The next prime is 445815740809. The reversal of 445815740785 is 587047518544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126727456144 + 319088284641 = 355988^2 + 564879^2 .

It is a cyclic number.

It is not a de Polignac number, because 445815740785 - 2¹⁵ = 445815708017 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44581574074 + ... + 44581574083.

It is an arithmetic number, because the mean of its divisors is an integer number (133744722237).

Almost surely, 2^445815740785 is an apocalyptic number.

It is an amenable number.

445815740785 is a deficient number, since it is larger than the sum of its proper divisors (89163148163).

445815740785 is an equidigital number, since it uses as much as digits as its factorization.

445815740785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89163148162.

The product of its (nonzero) digits is 25088000, while the sum is 58.

The spelling of 445815740785 in words is "four hundred forty-five billion, eight hundred fifteen million, seven hundred forty thousand, seven hundred eighty-five".