5171112161280 has 1664 divisors, whose sum is σ = 20473547351040. Its totient is φ = 1245800300544.

The previous prime is 5171112161273. The next prime is 5171112161317. The reversal of 5171112161280 is 821612111715.

It is a happy number.

5171112161280 is a `hidden beast` number, since 5 + 1 + 7 + 1 + 11 + 21 + 612 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1664).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 48328150987 + ... + 48328151093.

Almost surely, 2^{5171112161280} 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 5171112161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10236773675520).

5171112161280 is an abundant number, since it is smaller than the sum of its proper divisors (15302435189760).

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

5171112161280 is an equidigital number, since it uses as much as digits as its factorization.

5171112161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 36.

Adding to 5171112161280 its reverse (821612111715), we get a palindrome (5992724272995).

The spelling of 5171112161280 in words is "five trillion, one hundred seventy-one billion, one hundred twelve million, one hundred sixty-one thousand, two hundred eighty".