64422013520 has 40 divisors (see below), whose sum is σ = 150678105984. Its totient is φ = 25614495872.

The previous prime is 64422013457. The next prime is 64422013589. The reversal of 64422013520 is 2531022446.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397644 + ... + 2424363.

Almost surely, 2^64422013520 is an apocalyptic number.

It is an amenable number.

64422013520 is an abundant number, since it is smaller than the sum of its proper divisors (86256092464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64422013520 is a wasteful number, since it uses less digits than its factorization.

64422013520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822187 (or 4822181 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 64422013520 its reverse (2531022446), we get a palindrome (66953035966).

The spelling of 64422013520 in words is "sixty-four billion, four hundred twenty-two million, thirteen thousand, five hundred twenty".