445164143447027 has 4 divisors (see below), whose sum is σ = 446568446738976. Its totient is φ = 443759840155080.

The previous prime is 445164143447021. The next prime is 445164143447029. The reversal of 445164143447027 is 720744341461544.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445164143447027 is a prime.

It is a super-2 number, since 2×445164143447027² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445164143447021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702151645499 + ... + 702151646132.

It is an arithmetic number, because the mean of its divisors is an integer number (111642111684744).

Almost surely, 2^{445164143447027} is an apocalyptic number.

445164143447027 is a deficient number, since it is larger than the sum of its proper divisors (1404303291949).

445164143447027 is a wasteful number, since it uses less digits than its factorization.

445164143447027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404303291948.

The product of its (nonzero) digits is 36126720, while the sum is 56.

The spelling of 445164143447027 in words is "four hundred forty-five trillion, one hundred sixty-four billion, one hundred forty-three million, four hundred forty-seven thousand, twenty-seven".