445881391063 has 2 divisors, whose sum is σ = 445881391064. Its totient is φ = 445881391062.

The previous prime is 445881391037. The next prime is 445881391127. The reversal of 445881391063 is 360193188544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445881391063 - 2⁹ = 445881390551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445881391063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445881391463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222940695531 + 222940695532.

It is an arithmetic number, because the mean of its divisors is an integer number (222940695532).

Almost surely, 2^445881391063 is an apocalyptic number.

445881391063 is a deficient number, since it is larger than the sum of its proper divisors (1).

445881391063 is an equidigital number, since it uses as much as digits as its factorization.

445881391063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 445881391063 in words is "four hundred forty-five billion, eight hundred eighty-one million, three hundred ninety-one thousand, sixty-three".