64844444446 has 16 divisors (see below), whose sum is σ = 97725635568. Its totient is φ = 32269564800.

The previous prime is 64844444389. The next prime is 64844444447. The reversal of 64844444446 is 64444444846.

It is a junction number, because it is equal to n+sod(n) for n = 64844444393 and 64844444402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64844444447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309976 + ... + 475156.

It is an arithmetic number, because the mean of its divisors is an integer number (6107852223).

Almost surely, 2^64844444446 is an apocalyptic number.

64844444446 is a deficient number, since it is larger than the sum of its proper divisors (32881191122).

64844444446 is a wasteful number, since it uses less digits than its factorization.

64844444446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166107.

The product of its digits is 18874368, while the sum is 52.

The spelling of 64844444446 in words is "sixty-four billion, eight hundred forty-four million, four hundred forty-four thousand, four hundred forty-six".