21589963352 has 16 divisors (see below), whose sum is σ = 41468527800. Its totient is φ = 10531689280.

The previous prime is 21589963289. The next prime is 21589963363. The reversal of 21589963352 is 25336998512.

It is a super-2 number, since 2×21589963352² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21589963294 and 21589963303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32911202 + ... + 32911857.

Almost surely, 2^21589963352 is an apocalyptic number.

It is an amenable number.

21589963352 is a deficient number, since it is larger than the sum of its proper divisors (19878564448).

21589963352 is a wasteful number, since it uses less digits than its factorization.

21589963352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65823106 (or 65823102 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 53.

The spelling of 21589963352 in words is "twenty-one billion, five hundred eighty-nine million, nine hundred sixty-three thousand, three hundred fifty-two".