64444965272 has 16 divisors (see below), whose sum is σ = 120904547400. Its totient is φ = 32203752640.

The previous prime is 64444965269. The next prime is 64444965323. The reversal of 64444965272 is 27256944446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2326622 + ... + 2354157.

Almost surely, 2^64444965272 is an apocalyptic number.

It is an amenable number.

64444965272 is a deficient number, since it is larger than the sum of its proper divisors (56459582128).

64444965272 is a wasteful number, since it uses less digits than its factorization.

64444965272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682506 (or 4682502 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 53.

The spelling of 64444965272 in words is "sixty-four billion, four hundred forty-four million, nine hundred sixty-five thousand, two hundred seventy-two".