171864349696 has 88 divisors (see below), whose sum is σ = 370604109680. Its totient is φ = 79190065152.

The previous prime is 171864349681. The next prime is 171864349717. The reversal of 171864349696 is 696943468171.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8229700 + ... + 8250556.

Almost surely, 2^171864349696 is an apocalyptic number.

171864349696 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 171864349696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185302054840).

171864349696 is an abundant number, since it is smaller than the sum of its proper divisors (198739759984).

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

171864349696 is a wasteful number, since it uses less digits than its factorization.

171864349696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21509 (or 21491 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 64.

The spelling of 171864349696 in words is "one hundred seventy-one billion, eight hundred sixty-four million, three hundred forty-nine thousand, six hundred ninety-six".