20593985830 has 96 divisors (see below), whose sum is σ = 41454504000. Its totient is φ = 7359601920.

The previous prime is 20593985777. The next prime is 20593985831. The reversal of 20593985830 is 3858939502.

It is a happy number.

It is a super-2 number, since 2×20593985830² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593985831) 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 47 ways as a sum of consecutive naturals, for example, 18569316 + ... + 18570424.

It is an arithmetic number, because the mean of its divisors is an integer number (431817750).

Almost surely, 2^20593985830 is an apocalyptic number.

20593985830 is an abundant number, since it is smaller than the sum of its proper divisors (20860518170).

20593985830 is a wasteful number, since it uses less digits than its factorization.

20593985830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 20593985830 in words is "twenty billion, five hundred ninety-three million, nine hundred eighty-five thousand, eight hundred thirty".