21676489375 has 40 divisors (see below), whose sum is σ = 27803912400. Its totient is φ = 16887744000.

The previous prime is 21676489349. The next prime is 21676489381. The reversal of 21676489375 is 57398467612.

It is not a de Polignac number, because 21676489375 - 2²⁹ = 21139618463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4016679 + ... + 4022071.

It is an arithmetic number, because the mean of its divisors is an integer number (695097810).

Almost surely, 2^21676489375 is an apocalyptic number.

21676489375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21676489375 is a deficient number, since it is larger than the sum of its proper divisors (6127423025).

21676489375 is an equidigital number, since it uses as much as digits as its factorization.

21676489375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581 (or 5566 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 58.

The spelling of 21676489375 in words is "twenty-one billion, six hundred seventy-six million, four hundred eighty-nine thousand, three hundred seventy-five".