161717115360 has 192 divisors, whose sum is σ = 515745921600. Its totient is φ = 42589274112.

The previous prime is 161717115359. The next prime is 161717115457. The reversal of 161717115360 is 63511717161.

161717115360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47716546 + ... + 47719934.

It is an arithmetic number, because the mean of its divisors is an integer number (2686176675).

Almost surely, 2^161717115360 is an apocalyptic number.

161717115360 is a gapful number since it is divisible by the number (10) 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 161717115360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257872960800).

161717115360 is an abundant number, since it is smaller than the sum of its proper divisors (354028806240).

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

161717115360 is a wasteful number, since it uses less digits than its factorization.

161717115360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 39.

The spelling of 161717115360 in words is "one hundred sixty-one billion, seven hundred seventeen million, one hundred fifteen thousand, three hundred sixty".