20530452321030 has 128 divisors (see below), whose sum is σ = 50792240775168. Its totient is φ = 5308295997312.

The previous prime is 20530452321019. The next prime is 20530452321053. The reversal of 20530452321030 is 3012325403502.

It is a super-2 number, since 2×20530452321030² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 122220879 + ... + 122388741.

It is an arithmetic number, because the mean of its divisors is an integer number (396814381056).

Almost surely, 2^{20530452321030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20530452321030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25396120387584).

20530452321030 is an abundant number, since it is smaller than the sum of its proper divisors (30261788454138).

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

20530452321030 is a wasteful number, since it uses less digits than its factorization.

20530452321030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168730.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20530452321030 its reverse (3012325403502), we get a palindrome (23542777724532).

The spelling of 20530452321030 in words is "twenty trillion, five hundred thirty billion, four hundred fifty-two million, three hundred twenty-one thousand, thirty".