64445223032 has 8 divisors (see below), whose sum is σ = 120834793200. Its totient is φ = 32222611512.

The previous prime is 64445223023. The next prime is 64445223049. The reversal of 64445223032 is 23032254446.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 64445222983 and 64445223001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4027826432 + ... + 4027826447.

It is an arithmetic number, because the mean of its divisors is an integer number (15104349150).

Almost surely, 2^64445223032 is an apocalyptic number.

It is an amenable number.

64445223032 is a deficient number, since it is larger than the sum of its proper divisors (56389570168).

64445223032 is a wasteful number, since it uses less digits than its factorization.

64445223032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8055652885 (or 8055652881 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 64445223032 its reverse (23032254446), we get a palindrome (87477477478).

The spelling of 64445223032 in words is "sixty-four billion, four hundred forty-five million, two hundred twenty-three thousand, thirty-two".