64443311334446 has 32 divisors (see below), whose sum is σ = 105488737096032. Its totient is φ = 29282402972160.

The previous prime is 64443311334397. The next prime is 64443311334449.

64443311334446 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64443311334446² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64443311334394 and 64443311334403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64443311334449) 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, 1152865970 + ... + 1152921866.

It is an arithmetic number, because the mean of its divisors is an integer number (3296523034251).

Almost surely, 2^{64443311334446} is an apocalyptic number.

64443311334446 is a deficient number, since it is larger than the sum of its proper divisors (41045425761586).

64443311334446 is a wasteful number, since it uses less digits than its factorization.

64443311334446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72884.

The product of its digits is 11943936, while the sum is 50.

It can be divided in two parts, 6444331 and 1334446, that added together give a palindrome (7778777).

The spelling of 64443311334446 in words is "sixty-four trillion, four hundred forty-three billion, three hundred eleven million, three hundred thirty-four thousand, four hundred forty-six".