20950522320 has 320 divisors, whose sum is σ = 81569779200. Its totient is φ = 4420104192.

The previous prime is 20950522319. The next prime is 20950522357. The reversal of 20950522320 is 2322505902.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1060372 + ... + 1079948.

It is an arithmetic number, because the mean of its divisors is an integer number (254905560).

Almost surely, 2^20950522320 is an apocalyptic number.

20950522320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20950522320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40784889600).

20950522320 is an abundant number, since it is smaller than the sum of its proper divisors (60619256880).

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

20950522320 is a wasteful number, since it uses less digits than its factorization.

20950522320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627 (or 19607 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20950522320 in words is "twenty billion, nine hundred fifty million, five hundred twenty-two thousand, three hundred twenty".