64844644644846 has 48 divisors (see below), whose sum is σ = 153708326881200. Its totient is φ = 19593588879360.

The previous prime is 64844644644833. The next prime is 64844644644859.

64844644644846 is a `hidden beast` number, since 6 + 4 + 8 + 4 + 46 + 44 + 64 + 484 + 6 = 666.

64844644644846 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (64844644644833) and next prime (64844644644859).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469126035 + ... + 469264238.

It is an arithmetic number, because the mean of its divisors is an integer number (3202256810025).

Almost surely, 2^{64844644644846} is an apocalyptic number.

64844644644846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64844644644846 is an abundant number, since it is smaller than the sum of its proper divisors (88863682236354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64844644644846 is a wasteful number, since it uses less digits than its factorization.

64844644644846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938390641 (or 938390638 counting only the distinct ones).

The product of its digits is 5435817984, while the sum is 72.

The spelling of 64844644644846 in words is "sixty-four trillion, eight hundred forty-four billion, six hundred forty-four million, six hundred forty-four thousand, eight hundred forty-six".