64434043446 has 8 divisors (see below), whose sum is σ = 128868086904. Its totient is φ = 21478014480.

The previous prime is 64434043403. The next prime is 64434043459.

64434043446 is nontrivially palindromic in base 10.

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

64434043446 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 64434043398 and 64434043407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369503615 + ... + 5369503626.

It is an arithmetic number, because the mean of its divisors is an integer number (16108510863).

Almost surely, 2^64434043446 is an apocalyptic number.

64434043446 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.

64434043446 is a wasteful number, since it uses less digits than its factorization.

64434043446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10739007246.

The product of its (nonzero) digits is 1327104, while the sum is 42.

It can be divided in two parts, 644340 and 43446, that added together give a palindrome (687786).

The spelling of 64434043446 in words is "sixty-four billion, four hundred thirty-four million, forty-three thousand, four hundred forty-six".