21057576589 has 24 divisors (see below), whose sum is σ = 25117235136. Its totient is φ = 17592120000.

The previous prime is 21057576583. The next prime is 21057576593. The reversal of 21057576589 is 98567575012.

It is not a de Polignac number, because 21057576589 - 2³ = 21057576581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21057576581) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2348064 + ... + 2357014.

It is an arithmetic number, because the mean of its divisors is an integer number (1046551464).

Almost surely, 2^21057576589 is an apocalyptic number.

It is an amenable number.

21057576589 is a deficient number, since it is larger than the sum of its proper divisors (4059658547).

21057576589 is a wasteful number, since it uses less digits than its factorization.

21057576589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10177 (or 10170 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 21057576589 in words is "twenty-one billion, fifty-seven million, five hundred seventy-six thousand, five hundred eighty-nine".