20051361330 has 384 divisors, whose sum is σ = 65856526848. Its totient is φ = 3801600000.

The previous prime is 20051361311. The next prime is 20051361367. The reversal of 20051361330 is 3316315002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20051361330.

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 191 ways as a sum of consecutive naturals, for example, 33363030 + ... + 33363630.

It is an arithmetic number, because the mean of its divisors is an integer number (171501372).

Almost surely, 2^20051361330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20051361330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32928263424).

20051361330 is an abundant number, since it is smaller than the sum of its proper divisors (45805165518).

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

20051361330 is a wasteful number, since it uses less digits than its factorization.

20051361330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 20051361330 its reverse (3316315002), we get a palindrome (23367676332).

The spelling of 20051361330 in words is "twenty billion, fifty-one million, three hundred sixty-one thousand, three hundred thirty".