20553453030 has 128 divisors (see below), whose sum is σ = 54345945600. Its totient is φ = 4933555200.

The previous prime is 20553453029. The next prime is 20553453031. The reversal of 20553453030 is 3035435502.

It is an interprime number because it is at equal distance from previous prime (20553453029) and next prime (20553453031).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553453031) 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 63 ways as a sum of consecutive naturals, for example, 15944626 + ... + 15945914.

It is an arithmetic number, because the mean of its divisors is an integer number (424577700).

Almost surely, 2^20553453030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20553453030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27172972800).

20553453030 is an abundant number, since it is smaller than the sum of its proper divisors (33792492570).

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

20553453030 is a wasteful number, since it uses less digits than its factorization.

20553453030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750.

The product of its (nonzero) digits is 27000, while the sum is 30.

Adding to 20553453030 its reverse (3035435502), we get a palindrome (23588888532).

The spelling of 20553453030 in words is "twenty billion, five hundred fifty-three million, four hundred fifty-three thousand, thirty".