21999830559 has 8 divisors (see below), whose sum is σ = 33523551360. Its totient is φ = 12571331736.

The previous prime is 21999830557. The next prime is 21999830617. The reversal of 21999830559 is 95503899912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21999830559 - 2¹ = 21999830557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21999830557) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 523805469 + ... + 523805510.

It is an arithmetic number, because the mean of its divisors is an integer number (4190443920).

Almost surely, 2^21999830559 is an apocalyptic number.

21999830559 is a deficient number, since it is larger than the sum of its proper divisors (11523720801).

21999830559 is a wasteful number, since it uses less digits than its factorization.

21999830559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047610989.

The product of its (nonzero) digits is 7873200, while the sum is 60.

The spelling of 21999830559 in words is "twenty-one billion, nine hundred ninety-nine million, eight hundred thirty thousand, five hundred fifty-nine".