5116172544 has 432 divisors, whose sum is σ = 18094469120. Its totient is φ = 1410877440.

The previous prime is 5116172531. The next prime is 5116172561. The reversal of 5116172544 is 4452716115.

5116172544 is a `hidden beast` number, since 5 + 11 + 617 + 25 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

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

Its product of digits (33600) is a multiple of the sum of its prime factors (448).

It is a junction number, because it is equal to n+sod(n) for n = 5116172499 and 5116172508.

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, 13498947 + ... + 13499325.

Almost surely, 2^5116172544 is an apocalyptic number.

5116172544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5116172544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9047234560).

5116172544 is an abundant number, since it is smaller than the sum of its proper divisors (12978296576).

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

5116172544 is an equidigital number, since it uses as much as digits as its factorization.

5116172544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 422 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 5116172544 is about 71527.4251179224. The cubic root of 5116172544 is about 1723.1181655879.

Adding to 5116172544 its reverse (4452716115), we get a palindrome (9568888659).

The spelling of 5116172544 in words is "five billion, one hundred sixteen million, one hundred seventy-two thousand, five hundred forty-four".