20540530321 has 8 divisors (see below), whose sum is σ = 21275049600. Its totient is φ = 19807759440.

The previous prime is 20540530277. The next prime is 20540530337. The reversal of 20540530321 is 12303504502.

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 20540530321 - 2⁹ = 20540529809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20540530391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413161 + ... + 460198.

It is an arithmetic number, because the mean of its divisors is an integer number (2659381200).

Almost surely, 2^20540530321 is an apocalyptic number.

It is an amenable number.

20540530321 is a deficient number, since it is larger than the sum of its proper divisors (734519279).

20540530321 is an equidigital number, since it uses as much as digits as its factorization.

20540530321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874199.

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 20540530321 in words is "twenty billion, five hundred forty million, five hundred thirty thousand, three hundred twenty-one".