5117091840 has 448 divisors, whose sum is σ = 20823448320. Its totient is φ = 1167851520.

The previous prime is 5117091839. The next prime is 5117091937. The reversal of 5117091840 is 481907115.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 5117091795 and 5117091804.

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, 7741110 + ... + 7741770.

Almost surely, 2^5117091840 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 5117091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10411724160).

5117091840 is an abundant number, since it is smaller than the sum of its proper divisors (15706356480).

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

5117091840 is an equidigital number, since it uses as much as digits as its factorization.

5117091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 5117091840 is about 71533.8510077572. The cubic root of 5117091840 is about 1723.2213651807.

Adding to 5117091840 its reverse (481907115), we get a palindrome (5598998955).

The spelling of 5117091840 in words is "five billion, one hundred seventeen million, ninety-one thousand, eight hundred forty".