20854184832 has 160 divisors (see below), whose sum is σ = 66836126280. Its totient is φ = 6416630784.

The previous prime is 20854184779. The next prime is 20854184851. The reversal of 20854184832 is 23848145802.

20854184832 is a `hidden beast` number, since 20 + 8 + 541 + 8 + 4 + 83 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57423 + ... + 212145.

Almost surely, 2^20854184832 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 20854184832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33418063140).

20854184832 is an abundant number, since it is smaller than the sum of its proper divisors (45981941448).

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

20854184832 is a wasteful number, since it uses less digits than its factorization.

20854184832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154762 (or 154741 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 20854184832 in words is "twenty billion, eight hundred fifty-four million, one hundred eighty-four thousand, eight hundred thirty-two".