171017423136 has 144 divisors (see below), whose sum is σ = 556726270464. Its totient is φ = 48781274112.

The previous prime is 171017423117. The next prime is 171017423147. The reversal of 171017423136 is 631324710171.

It is a happy number.

171017423136 is a `hidden beast` number, since 171 + 0 + 174 + 2 + 313 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a self number, because there is not a number n which added to its sum of digits gives 171017423136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1153836 + ... + 1293588.

It is an arithmetic number, because the mean of its divisors is an integer number (3866154656).

Almost surely, 2^171017423136 is an apocalyptic number.

171017423136 is a gapful number since it is divisible by the number (16) 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 171017423136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278363135232).

171017423136 is an abundant number, since it is smaller than the sum of its proper divisors (385708847328).

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

171017423136 is a wasteful number, since it uses less digits than its factorization.

171017423136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140383 (or 140372 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 171017423136 in words is "one hundred seventy-one billion, seventeen million, four hundred twenty-three thousand, one hundred thirty-six".