20522128443 has 8 divisors (see below), whose sum is σ = 27999183168. Its totient is φ = 13363246344.

The previous prime is 20522128423. The next prime is 20522128447. The reversal of 20522128443 is 34482122502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20522128443 - 2⁶ = 20522128379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20522128447) 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 7 ways as a sum of consecutive naturals, for example, 79543005 + ... + 79543262.

It is an arithmetic number, because the mean of its divisors is an integer number (3499897896).

Almost surely, 2^20522128443 is an apocalyptic number.

20522128443 is a deficient number, since it is larger than the sum of its proper divisors (7477054725).

20522128443 is a wasteful number, since it uses less digits than its factorization.

20522128443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159086313.

The product of its (nonzero) digits is 30720, while the sum is 33.

The spelling of 20522128443 in words is "twenty billion, five hundred twenty-two million, one hundred twenty-eight thousand, four hundred forty-three".