20633430360 has 128 divisors (see below), whose sum is σ = 63636350400. Its totient is φ = 5348229120.

The previous prime is 20633430343. The next prime is 20633430413. The reversal of 20633430360 is 6303433602.

It is a super-3 number, since 3×20633430360³ (a number of 32 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6609600 + ... + 6612720.

Almost surely, 2^20633430360 is an apocalyptic number.

20633430360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20633430360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31818175200).

20633430360 is an abundant number, since it is smaller than the sum of its proper divisors (43002920040).

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

20633430360 is a wasteful number, since it uses less digits than its factorization.

20633430360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661 (or 4657 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 20633430360 its reverse (6303433602), we get a palindrome (26936863962).

The spelling of 20633430360 in words is "twenty billion, six hundred thirty-three million, four hundred thirty thousand, three hundred sixty".