5117747840 has 192 divisors, whose sum is σ = 12962582280. Its totient is φ = 1931304960.

The previous prime is 5117747783. The next prime is 5117747857. The reversal of 5117747840 is 487477115.

It can be written as a sum of positive squares in 4 ways, for example, as 4125749824 + 991998016 = 64232^2 + 31496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5117747791 and 5117747800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32597042 + ... + 32597198.

Almost surely, 2^5117747840 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 5117747840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6481291140).

5117747840 is an abundant number, since it is smaller than the sum of its proper divisors (7844834440).

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

5117747840 is a wasteful number, since it uses less digits than its factorization.

5117747840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 5117747840 is about 71538.4361025596. The cubic root of 5117747840 is about 1723.2949997729.

The spelling of 5117747840 in words is "five billion, one hundred seventeen million, seven hundred forty-seven thousand, eight hundred forty".