64426644424 has 16 divisors (see below), whose sum is σ = 120805171200. Its totient is φ = 32211932112.

The previous prime is 64426644407. The next prime is 64426644473. The reversal of 64426644424 is 42444662446.

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, 38457 + ... + 361015.

It is an arithmetic number, because the mean of its divisors is an integer number (7550323200).

Almost surely, 2^64426644424 is an apocalyptic number.

It is an amenable number.

64426644424 is a deficient number, since it is larger than the sum of its proper divisors (56378526776).

64426644424 is a wasteful number, since it uses less digits than its factorization.

64426644424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347532 (or 347528 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 46.

The spelling of 64426644424 in words is "sixty-four billion, four hundred twenty-six million, six hundred forty-four thousand, four hundred twenty-four".