20051684352 has 792 divisors, whose sum is σ = 74683894320. Its totient is φ = 5295144960.

The previous prime is 20051684329. The next prime is 20051684369. The reversal of 20051684352 is 25348615002.

20051684352 is a `hidden beast` number, since 200 + 5 + 16 + 8 + 435 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 489065452 + ... + 489065492.

Almost surely, 2^20051684352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20051684352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37341947160).

20051684352 is an abundant number, since it is smaller than the sum of its proper divisors (54632209968).

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

20051684352 is a wasteful number, since it uses less digits than its factorization.

20051684352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20051684352 in words is "twenty billion, fifty-one million, six hundred eighty-four thousand, three hundred fifty-two".