445868002057 has 4 divisors (see below), whose sum is σ = 445874208660. Its totient is φ = 445861795456.

The previous prime is 445868002043. The next prime is 445868002093. The reversal of 445868002057 is 750200868544.

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 91385894601 + 354482107456 = 302301^2 + 595384^2 .

It is a cyclic number.

It is not a de Polignac number, because 445868002057 - 2²³ = 445859613449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445868002057.

It is not an unprimeable number, because it can be changed into a prime (445868002007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2994268 + ... + 3139645.

It is an arithmetic number, because the mean of its divisors is an integer number (111468552165).

Almost surely, 2^445868002057 is an apocalyptic number.

It is an amenable number.

445868002057 is a deficient number, since it is larger than the sum of its proper divisors (6206603).

445868002057 is an equidigital number, since it uses as much as digits as its factorization.

445868002057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206602.

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 445868002057 in words is "four hundred forty-five billion, eight hundred sixty-eight million, two thousand, fifty-seven".