173317509012 has 96 divisors (see below), whose sum is σ = 420421639680. Its totient is φ = 55505197440.

The previous prime is 173317509007. The next prime is 173317509017. The reversal of 173317509012 is 210905713371.

It is an interprime number because it is at equal distance from previous prime (173317509007) and next prime (173317509017).

It is a super-2 number, since 2×173317509012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173317509017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78672303 + ... + 78674505.

It is an arithmetic number, because the mean of its divisors is an integer number (4379392080).

Almost surely, 2^173317509012 is an apocalyptic number.

173317509012 is a gapful number since it is divisible by the number (12) 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 173317509012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210210819840).

173317509012 is an abundant number, since it is smaller than the sum of its proper divisors (247104130668).

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

173317509012 is a wasteful number, since it uses less digits than its factorization.

173317509012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3251 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The spelling of 173317509012 in words is "one hundred seventy-three billion, three hundred seventeen million, five hundred nine thousand, twelve".