445072551331857 has 4 divisors (see below), whose sum is σ = 593430068442480. Its totient is φ = 296715034221236.

The previous prime is 445072551331769. The next prime is 445072551331861. The reversal of 445072551331857 is 758133155270544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445072551331857 - 2⁸ = 445072551331601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445072551331857.

It is not an unprimeable number, because it can be changed into a prime (445072551331867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74178758555307 + ... + 74178758555312.

It is an arithmetic number, because the mean of its divisors is an integer number (148357517110620).

Almost surely, 2^{445072551331857} is an apocalyptic number.

It is an amenable number.

445072551331857 is a deficient number, since it is larger than the sum of its proper divisors (148357517110623).

445072551331857 is a wasteful number, since it uses less digits than its factorization.

445072551331857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148357517110622.

The product of its (nonzero) digits is 70560000, while the sum is 60.

The spelling of 445072551331857 in words is "four hundred forty-five trillion, seventy-two billion, five hundred fifty-one million, three hundred thirty-one thousand, eight hundred fifty-seven".