64964446946 has 64 divisors (see below), whose sum is σ = 117392841216. Its totient is φ = 26385216000.

The previous prime is 64964446919. The next prime is 64964446993.

It is a happy number.

64964446946 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3062051 + ... + 3083193.

It is an arithmetic number, because the mean of its divisors is an integer number (1834263144).

Almost surely, 2^64964446946 is an apocalyptic number.

64964446946 is a deficient number, since it is larger than the sum of its proper divisors (52428394270).

64964446946 is a wasteful number, since it uses less digits than its factorization.

64964446946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347.

The product of its digits is 107495424, while the sum is 62.

The spelling of 64964446946 in words is "sixty-four billion, nine hundred sixty-four million, four hundred forty-six thousand, nine hundred forty-six".