171321953088 has 224 divisors, whose sum is σ = 541271106432. Its totient is φ = 47136153600.

The previous prime is 171321953021. The next prime is 171321953107. The reversal of 171321953088 is 880359123171.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1623670 + ... + 1725962.

It is an arithmetic number, because the mean of its divisors is an integer number (2416388868).

Almost surely, 2^171321953088 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 171321953088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270635553216).

171321953088 is an abundant number, since it is smaller than the sum of its proper divisors (369949153344).

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

171321953088 is a wasteful number, since it uses less digits than its factorization.

171321953088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102393 (or 102383 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 171321953088 in words is "one hundred seventy-one billion, three hundred twenty-one million, nine hundred fifty-three thousand, eighty-eight".