53181920484 has 216 divisors, whose sum is σ = 172014032736. Its totient is φ = 13812876000.

The previous prime is 53181920447. The next prime is 53181920489. The reversal of 53181920484 is 48402918135.

53181920484 is a `hidden beast` number, since 5 + 3 + 1 + 81 + 92 + 0 + 484 = 666.

53181920484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53181920489) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2336559 + ... + 2359209.

Almost surely, 2^53181920484 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 53181920484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86007016368).

53181920484 is an abundant number, since it is smaller than the sum of its proper divisors (118832112252).

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

53181920484 is a wasteful number, since it uses less digits than its factorization.

53181920484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22708 (or 22674 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 53181920484 in words is "fifty-three billion, one hundred eighty-one million, nine hundred twenty thousand, four hundred eighty-four".