64424442446 has 32 divisors (see below), whose sum is σ = 121468032000. Its totient is φ = 24944321376.

The previous prime is 64424442443. The next prime is 64424442499.

It is a happy number.

64424442446 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64424442397 and 64424442406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64424442443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3757196 + ... + 3774303.

It is an arithmetic number, because the mean of its divisors is an integer number (3795876000).

Almost surely, 2^64424442446 is an apocalyptic number.

64424442446 is a deficient number, since it is larger than the sum of its proper divisors (57043589554).

64424442446 is a wasteful number, since it uses less digits than its factorization.

64424442446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531568.

The product of its digits is 2359296, while the sum is 44.

The spelling of 64424442446 in words is "sixty-four billion, four hundred twenty-four million, four hundred forty-two thousand, four hundred forty-six".