21704593264384 has 36 divisors (see below), whose sum is σ = 44818347906360. Its totient is φ = 10478079503360.

The previous prime is 21704593264373. The next prime is 21704593264411. The reversal of 21704593264384 is 48346239540712.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1461778222 + ... + 1461793069.

It is an arithmetic number, because the mean of its divisors is an integer number (1244954108510).

It is a 2-persistent number, because it is pandigital, and so is 2⋅21704593264384 = 43409186528768, but 3⋅21704593264384 = 65113779793152 is not.

Almost surely, 2^{21704593264384} is an apocalyptic number.

It is an amenable number.

21704593264384 is an abundant number, since it is smaller than the sum of its proper divisors (23113754641976).

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

21704593264384 is an equidigital number, since it uses as much as digits as its factorization.

21704593264384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923571336 (or 2923571322 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 21704593264384 in words is "twenty-one trillion, seven hundred four billion, five hundred ninety-three million, two hundred sixty-four thousand, three hundred eighty-four".