64465256446 has 16 divisors (see below), whose sum is σ = 101837289600. Its totient is φ = 30521161368.

The previous prime is 64465256437. The next prime is 64465256459.

It is a happy number.

64465256446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 64465256393 and 64465256402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338520 + ... + 493483.

It is an arithmetic number, because the mean of its divisors is an integer number (6364830600).

Almost surely, 2^64465256446 is an apocalyptic number.

64465256446 is a deficient number, since it is larger than the sum of its proper divisors (37372033154).

64465256446 is a wasteful number, since it uses less digits than its factorization.

64465256446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834063.

The product of its digits is 16588800, while the sum is 52.

The spelling of 64465256446 in words is "sixty-four billion, four hundred sixty-five million, two hundred fifty-six thousand, four hundred forty-six".