5172320165100 has 288 divisors, whose sum is σ = 16552602398976. Its totient is φ = 1236562329600.

The previous prime is 5172320165063. The next prime is 5172320165123. The reversal of 5172320165100 is 15610232715.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90559752 + ... + 90616848.

Almost surely, 2^{5172320165100} is an apocalyptic number.

5172320165100 is a gapful number since it is divisible by the number (50) 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 5172320165100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8276301199488).

5172320165100 is an abundant number, since it is smaller than the sum of its proper divisors (11380282233876).

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

5172320165100 is a wasteful number, since it uses less digits than its factorization.

5172320165100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57505 (or 57498 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

Adding to 5172320165100 its reverse (15610232715), we get a palindrome (5187930397815).

The spelling of 5172320165100 in words is "five trillion, one hundred seventy-two billion, three hundred twenty million, one hundred sixty-five thousand, one hundred".