20532889021 has 8 divisors (see below), whose sum is σ = 21022839200. Its totient is φ = 20043504432.

The previous prime is 20532889019. The next prime is 20532889037. The reversal of 20532889021 is 12098823502.

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

It is a cyclic number.

It is not a de Polignac number, because 20532889021 - 2¹ = 20532889019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532889121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67470 + ... + 213583.

It is an arithmetic number, because the mean of its divisors is an integer number (2627854900).

Almost surely, 2^20532889021 is an apocalyptic number.

It is an amenable number.

20532889021 is a deficient number, since it is larger than the sum of its proper divisors (489950179).

20532889021 is a wasteful number, since it uses less digits than its factorization.

20532889021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282795.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 20532889021 in words is "twenty billion, five hundred thirty-two million, eight hundred eighty-nine thousand, twenty-one".