64223444432245 has 64 divisors (see below), whose sum is σ = 93355053023232. Its totient is φ = 41405696640000.

The previous prime is 64223444432209. The next prime is 64223444432297. The reversal of 64223444432245 is 54223444432246.

It is not a de Polignac number, because 64223444432245 - 2⁹ = 64223444431733 is a prime.

It is a super-2 number, since 2×64223444432245² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5559984220 + ... + 5559995770.

It is an arithmetic number, because the mean of its divisors is an integer number (1458672703488).

Almost surely, 2^{64223444432245} is an apocalyptic number.

It is an amenable number.

64223444432245 is a deficient number, since it is larger than the sum of its proper divisors (29131608590987).

64223444432245 is a wasteful number, since it uses less digits than its factorization.

64223444432245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402.

The product of its digits is 17694720, while the sum is 49.

Subtracting from 64223444432245 its reverse (54223444432246), we obtain a palindrome (9999999999999).

The spelling of 64223444432245 in words is "sixty-four trillion, two hundred twenty-three billion, four hundred forty-four million, four hundred thirty-two thousand, two hundred forty-five".