168591965346 has 144 divisors (see below), whose sum is σ = 447763773600. Its totient is φ = 45585058176.

The previous prime is 168591965287. The next prime is 168591965357. The reversal of 168591965346 is 643569195861.

168591965346 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 9 + 1 + 96 + 534 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17306145 + ... + 17315883.

It is an arithmetic number, because the mean of its divisors is an integer number (3109470650).

Almost surely, 2^168591965346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168591965346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223881886800).

168591965346 is an abundant number, since it is smaller than the sum of its proper divisors (279171808254).

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

168591965346 is a wasteful number, since it uses less digits than its factorization.

168591965346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813 (or 10803 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 63.

The spelling of 168591965346 in words is "one hundred sixty-eight billion, five hundred ninety-one million, nine hundred sixty-five thousand, three hundred forty-six".