55885824540 has 288 divisors, whose sum is σ = 209744510976. Its totient is φ = 11728903680.

The previous prime is 55885824539. The next prime is 55885824541. The reversal of 55885824540 is 4542858855.

55885824540 is a `hidden beast` number, since 5 + 5 + 8 + 8 + 582 + 4 + 54 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (55885824539) and next prime (55885824541).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55885824541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3119649 + ... + 3137511.

It is an arithmetic number, because the mean of its divisors is an integer number (728279552).

Almost surely, 2^55885824540 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 55885824540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104872255488).

55885824540 is an abundant number, since it is smaller than the sum of its proper divisors (153858686436).

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

55885824540 is a wasteful number, since it uses less digits than its factorization.

55885824540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18089 (or 18084 counting only the distinct ones).

The product of its (nonzero) digits is 10240000, while the sum is 54.

The spelling of 55885824540 in words is "fifty-five billion, eight hundred eighty-five million, eight hundred twenty-four thousand, five hundred forty".