20055431352 has 128 divisors (see below), whose sum is σ = 58010515200. Its totient is φ = 5710387200.

The previous prime is 20055431351. The next prime is 20055431393. The reversal of 20055431352 is 25313455002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055431351) 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 31 ways as a sum of consecutive naturals, for example, 2954202 + ... + 2960982.

It is an arithmetic number, because the mean of its divisors is an integer number (453207150).

Almost surely, 2^20055431352 is an apocalyptic number.

20055431352 is a gapful number since it is divisible by the number (22) 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 20055431352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29005257600).

20055431352 is an abundant number, since it is smaller than the sum of its proper divisors (37955083848).

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

20055431352 is a wasteful number, since it uses less digits than its factorization.

20055431352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7477 (or 7473 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 20055431352 its reverse (25313455002), we get a palindrome (45368886354).

The spelling of 20055431352 in words is "twenty billion, fifty-five million, four hundred thirty-one thousand, three hundred fifty-two".