5171720099964 has 96 divisors (see below), whose sum is σ = 13598991286272. Its totient is φ = 1515522360000.

The previous prime is 5171720099951. The next prime is 5171720099993. The reversal of 5171720099964 is 4699900271715.

It is a junction number, because it is equal to n+sod(n) for n = 5171720099898 and 5171720099907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5131489 + ... + 6056039.

It is an arithmetic number, because the mean of its divisors is an integer number (141656159232).

Almost surely, 2^{5171720099964} 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 5171720099964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6799495643136).

5171720099964 is an abundant number, since it is smaller than the sum of its proper divisors (8427271186308).

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

5171720099964 is a wasteful number, since it uses less digits than its factorization.

5171720099964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925967 (or 925965 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 60.

The spelling of 5171720099964 in words is "five trillion, one hundred seventy-one billion, seven hundred twenty million, ninety-nine thousand, nine hundred sixty-four".