21583189017 has 64 divisors (see below), whose sum is σ = 35109580800. Its totient is φ = 13022856000.

The previous prime is 21583189009. The next prime is 21583189027. The reversal of 21583189017 is 71098138512.

It is not a de Polignac number, because 21583189017 - 2³ = 21583189009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21583189027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9587142 + ... + 9589392.

It is an arithmetic number, because the mean of its divisors is an integer number (548587200).

Almost surely, 2^21583189017 is an apocalyptic number.

21583189017 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

21583189017 is a deficient number, since it is larger than the sum of its proper divisors (13526391783).

21583189017 is a wasteful number, since it uses less digits than its factorization.

21583189017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The spelling of 21583189017 in words is "twenty-one billion, five hundred eighty-three million, one hundred eighty-nine thousand, seventeen".