445747446685845 has 24 divisors (see below), whose sum is σ = 774667506319200. Its totient is φ = 237104710418016.

The previous prime is 445747446685777. The next prime is 445747446685889. The reversal of 445747446685845 is 548586644747544.

It is a happy number.

445747446685845 is a `hidden beast` number, since 4 + 4 + 5 + 7 + 4 + 74 + 466 + 8 + 5 + 84 + 5 = 666.

It is not a de Polignac number, because 445747446685845 - 2¹¹ = 445747446683797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13067923335 + ... + 13067957444.

It is an arithmetic number, because the mean of its divisors is an integer number (32277812763300).

Almost surely, 2^{445747446685845} is an apocalyptic number.

445747446685845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445747446685845 is a deficient number, since it is larger than the sum of its proper divisors (328920059633355).

445747446685845 is a wasteful number, since it uses less digits than its factorization.

445747446685845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26135881169 (or 26135881166 counting only the distinct ones).

The product of its digits is 57802752000, while the sum is 81.

The spelling of 445747446685845 in words is "four hundred forty-five trillion, seven hundred forty-seven billion, four hundred forty-six million, six hundred eighty-five thousand, eight hundred forty-five".