64446222264447 has 16 divisors (see below), whose sum is σ = 88439656436352. Its totient is φ = 41713441126560.

The previous prime is 64446222264439. The next prime is 64446222264451. The reversal of 64446222264447 is 74446222264446.

It is not a de Polignac number, because 64446222264447 - 2³ = 64446222264439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446222264947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621571929 + ... + 621675602.

It is an arithmetic number, because the mean of its divisors is an integer number (5527478527272).

Almost surely, 2^{64446222264447} is an apocalyptic number.

64446222264447 is a deficient number, since it is larger than the sum of its proper divisors (23993434171905).

64446222264447 is a wasteful number, since it uses less digits than its factorization.

64446222264447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243248038.

The product of its digits is 99090432, while the sum is 57.

Subtracting 64446222264447 from its reverse (74446222264446), we obtain a palindrome (9999999999999).

The spelling of 64446222264447 in words is "sixty-four trillion, four hundred forty-six billion, two hundred twenty-two million, two hundred sixty-four thousand, four hundred forty-seven".