64224266242247 has 4 divisors (see below), whose sum is σ = 65717853829320. Its totient is φ = 62730678655176.

The previous prime is 64224266242229. The next prime is 64224266242259. The reversal of 64224266242247 is 74224266242246.

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 64224266242247 - 2⁸ = 64224266241991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64224266742247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746793793472 + ... + 746793793557.

It is an arithmetic number, because the mean of its divisors is an integer number (16429463457330).

Almost surely, 2^{64224266242247} is an apocalyptic number.

64224266242247 is a deficient number, since it is larger than the sum of its proper divisors (1493587587073).

64224266242247 is a wasteful number, since it uses less digits than its factorization.

64224266242247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493587587072.

The product of its digits is 24772608, while the sum is 53.

Subtracting 64224266242247 from its reverse (74224266242246), we obtain a palindrome (9999999999999).

The spelling of 64224266242247 in words is "sixty-four trillion, two hundred twenty-four billion, two hundred sixty-six million, two hundred forty-two thousand, two hundred forty-seven".