71697735168 has 160 divisors (see below), whose sum is σ = 199367052192. Its totient is φ = 22875340800.

The previous prime is 71697735163. The next prime is 71697735191. The reversal of 71697735168 is 86153779617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71697735163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3326988 + ... + 3348468.

Almost surely, 2^71697735168 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 71697735168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99683526096).

71697735168 is an abundant number, since it is smaller than the sum of its proper divisors (127669317024).

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

71697735168 is a wasteful number, since it uses less digits than its factorization.

71697735168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596 (or 21580 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 60.

The spelling of 71697735168 in words is "seventy-one billion, six hundred ninety-seven million, seven hundred thirty-five thousand, one hundred sixty-eight".