64444444446 has 8 divisors (see below), whose sum is σ = 128888888904. Its totient is φ = 21481481480.

The previous prime is 64444444439. The next prime is 64444444447.

64444444446 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

64444444446 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64444444395 and 64444444404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444444447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5370370365 + ... + 5370370376.

It is an arithmetic number, because the mean of its divisors is an integer number (16111111113).

Almost surely, 2^64444444446 is an apocalyptic number.

64444444446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64444444446 is a wasteful number, since it uses less digits than its factorization.

64444444446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10740740746.

The product of its digits is 9437184, while the sum is 48.

The spelling of 64444444446 in words is "sixty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-six".