171145542736 has 120 divisors (see below), whose sum is σ = 400840773120. Its totient is φ = 69334748928.

The previous prime is 171145542721. The next prime is 171145542761. The reversal of 171145542736 is 637245541171.

It is a congruent number.

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, 19362510 + ... + 19371346.

It is an arithmetic number, because the mean of its divisors is an integer number (3340339776).

Almost surely, 2^171145542736 is an apocalyptic number.

171145542736 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 171145542736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200420386560).

171145542736 is an abundant number, since it is smaller than the sum of its proper divisors (229695230384).

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

171145542736 is a wasteful number, since it uses less digits than its factorization.

171145542736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369 (or 9344 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The spelling of 171145542736 in words is "one hundred seventy-one billion, one hundred forty-five million, five hundred forty-two thousand, seven hundred thirty-six".