20522205108 has 72 divisors (see below), whose sum is σ = 53253607680. Its totient is φ = 6659725440.

The previous prime is 20522205107. The next prime is 20522205131. The reversal of 20522205108 is 80150222502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522205107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692491 + ... + 721517.

It is an arithmetic number, because the mean of its divisors is an integer number (739633440).

Almost surely, 2^20522205108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20522205108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26626803840).

20522205108 is an abundant number, since it is smaller than the sum of its proper divisors (32731402572).

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

20522205108 is a wasteful number, since it uses less digits than its factorization.

20522205108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29557 (or 29552 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 20522205108 in words is "twenty billion, five hundred twenty-two million, two hundred five thousand, one hundred eight".