64434644643446 has 48 divisors (see below), whose sum is σ = 121534375431840. Its totient is φ = 25079525856000.

The previous prime is 64434644643431. The next prime is 64434644643469.

64434644643446 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17139605 + ... + 20558096.

It is an arithmetic number, because the mean of its divisors is an integer number (2531966154830).

Almost surely, 2^{64434644643446} is an apocalyptic number.

64434644643446 is a deficient number, since it is larger than the sum of its proper divisors (57099730788394).

64434644643446 is a wasteful number, since it uses less digits than its factorization.

64434644643446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37698741 (or 37698730 counting only the distinct ones).

The product of its digits is 764411904, while the sum is 62.

The spelling of 64434644643446 in words is "sixty-four trillion, four hundred thirty-four billion, six hundred forty-four million, six hundred forty-three thousand, four hundred forty-six".