283168864640 has 32 divisors (see below), whose sum is σ = 676950568560. Its totient is φ = 113267545600.

The previous prime is 283168864621. The next prime is 283168864673. The reversal of 283168864640 is 46468861382.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221225036 + ... + 221226315.

Almost surely, 2^283168864640 is an apocalyptic number.

283168864640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283168864640 is an abundant number, since it is smaller than the sum of its proper divisors (393781703920).

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

283168864640 is an equidigital number, since it uses as much as digits as its factorization.

283168864640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442451370 (or 442451358 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 283168864640 in words is "two hundred eighty-three billion, one hundred sixty-eight million, eight hundred sixty-four thousand, six hundred forty".