5171771808 has 192 divisors, whose sum is σ = 17497912320. Its totient is φ = 1455480576.

The previous prime is 5171771779. The next prime is 5171771821. The reversal of 5171771808 is 8081771715.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398835 + ... + 411597.

It is an arithmetic number, because the mean of its divisors is an integer number (91134960).

Almost surely, 2^5171771808 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 5171771808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8748956160).

5171771808 is an abundant number, since it is smaller than the sum of its proper divisors (12326140512).

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

5171771808 is a wasteful number, since it uses less digits than its factorization.

5171771808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856 (or 12842 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 45.

The square root of 5171771808 is about 71915.0318639991. The cubic root of 5171771808 is about 1729.3376024449.

The spelling of 5171771808 in words is "five billion, one hundred seventy-one million, seven hundred seventy-one thousand, eight hundred eight".