55871131608 has 192 divisors, whose sum is σ = 161037676800. Its totient is φ = 17468421120.

The previous prime is 55871131583. The next prime is 55871131691. The reversal of 55871131608 is 80613117855.

55871131608 is a `hidden beast` number, since 5 + 5 + 8 + 7 + 1 + 1 + 31 + 608 = 666.

55871131608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24195958 + ... + 24198266.

It is an arithmetic number, because the mean of its divisors is an integer number (838737900).

Almost surely, 2^55871131608 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 55871131608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80518838400).

55871131608 is an abundant number, since it is smaller than the sum of its proper divisors (105166545192).

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

55871131608 is a wasteful number, since it uses less digits than its factorization.

55871131608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2675 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 55871131608 in words is "fifty-five billion, eight hundred seventy-one million, one hundred thirty-one thousand, six hundred eight".