20523535321 has 8 divisors (see below), whose sum is σ = 20586358080. Its totient is φ = 20460798288.

The previous prime is 20523535313. The next prime is 20523535327. The reversal of 20523535321 is 12353532502.

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 20523535321 - 2³ = 20523535313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20523535327) 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, 475575 + ... + 516931.

It is an arithmetic number, because the mean of its divisors is an integer number (2573294760).

Almost surely, 2^20523535321 is an apocalyptic number.

It is an amenable number.

20523535321 is a deficient number, since it is larger than the sum of its proper divisors (62822759).

20523535321 is a wasteful number, since it uses less digits than its factorization.

20523535321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42863.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 20523535321 in words is "twenty billion, five hundred twenty-three million, five hundred thirty-five thousand, three hundred twenty-one".