20916832230 has 256 divisors, whose sum is σ = 66073743360. Its totient is φ = 4608866304.

The previous prime is 20916832219. The next prime is 20916832369. The reversal of 20916832230 is 3223861902.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7900767 + ... + 7903413.

It is an arithmetic number, because the mean of its divisors is an integer number (258100560).

Almost surely, 2^20916832230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20916832230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33036871680).

20916832230 is an abundant number, since it is smaller than the sum of its proper divisors (45156911130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20916832230 is a wasteful number, since it uses less digits than its factorization.

20916832230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820 (or 2814 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 20916832230 in words is "twenty billion, nine hundred sixteen million, eight hundred thirty-two thousand, two hundred thirty".