64043222047 has 4 divisors (see below), whose sum is σ = 73192253776. Its totient is φ = 54894190320.

The previous prime is 64043222039. The next prime is 64043222077. The reversal of 64043222047 is 74022234046.

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

It is a cyclic number.

It is not a de Polignac number, because 64043222047 - 2³ = 64043222039 is a prime.

It is a super-2 number, since 2×64043222047² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64043222077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4574515854 + ... + 4574515867.

It is an arithmetic number, because the mean of its divisors is an integer number (18298063444).

Almost surely, 2^64043222047 is an apocalyptic number.

64043222047 is a deficient number, since it is larger than the sum of its proper divisors (9149031729).

64043222047 is an equidigital number, since it uses as much as digits as its factorization.

64043222047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9149031728.

The product of its (nonzero) digits is 64512, while the sum is 34.

The spelling of 64043222047 in words is "sixty-four billion, forty-three million, two hundred twenty-two thousand, forty-seven".