445221322052467 has 4 divisors (see below), whose sum is σ = 450857034989920. Its totient is φ = 439585609115016.

The previous prime is 445221322052327. The next prime is 445221322052471. The reversal of 445221322052467 is 764250223122544.

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-445221322052467 is a prime.

It is a super-2 number, since 2×445221322052467² (a number of 30 digits) contains 22 as substring.

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 445221322052467.

It is not an unprimeable number, because it can be changed into a prime (445221322052267) 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, 2817856468608 + ... + 2817856468765.

It is an arithmetic number, because the mean of its divisors is an integer number (112714258747480).

Almost surely, 2^{445221322052467} is an apocalyptic number.

445221322052467 is a deficient number, since it is larger than the sum of its proper divisors (5635712937453).

445221322052467 is an equidigital number, since it uses as much as digits as its factorization.

445221322052467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635712937452.

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 445221322052467 in words is "four hundred forty-five trillion, two hundred twenty-one billion, three hundred twenty-two million, fifty-two thousand, four hundred sixty-seven".