64228711447 has 4 divisors (see below), whose sum is σ = 64322751240. Its totient is φ = 64134671656.

The previous prime is 64228711441. The next prime is 64228711457. The reversal of 64228711447 is 74411782246.

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 64228711447 - 2⁷ = 64228711319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64228711397 and 64228711406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64228711441) 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, 47018872 + ... + 47020237.

It is an arithmetic number, because the mean of its divisors is an integer number (16080687810).

Almost surely, 2^64228711447 is an apocalyptic number.

64228711447 is a deficient number, since it is larger than the sum of its proper divisors (94039793).

64228711447 is an equidigital number, since it uses as much as digits as its factorization.

64228711447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94039792.

The product of its digits is 602112, while the sum is 46.

The spelling of 64228711447 in words is "sixty-four billion, two hundred twenty-eight million, seven hundred eleven thousand, four hundred forty-seven".