644166410482 has 32 divisors (see below), whose sum is σ = 1135107061632. Its totient is φ = 268378717824.

The previous prime is 644166410443. The next prime is 644166410527. The reversal of 644166410482 is 284014661446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67798 + ... + 1137070.

It is an arithmetic number, because the mean of its divisors is an integer number (35472095676).

Almost surely, 2^644166410482 is an apocalyptic number.

644166410482 is a deficient number, since it is larger than the sum of its proper divisors (490940651150).

644166410482 is a wasteful number, since it uses less digits than its factorization.

644166410482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070482.

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 644166410482 in words is "six hundred forty-four billion, one hundred sixty-six million, four hundred ten thousand, four hundred eighty-two".