168591680732 has 12 divisors (see below), whose sum is σ = 298770067680. Its totient is φ = 83228804256.

The previous prime is 168591680731. The next prime is 168591680759. The reversal of 168591680732 is 237086195861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168591680731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266758673 + ... + 266759304.

It is an arithmetic number, because the mean of its divisors is an integer number (24897505640).

Almost surely, 2^168591680732 is an apocalyptic number.

It is an amenable number.

168591680732 is a deficient number, since it is larger than the sum of its proper divisors (130178386948).

168591680732 is a wasteful number, since it uses less digits than its factorization.

168591680732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533518060 (or 533518058 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 168591680732 in words is "one hundred sixty-eight billion, five hundred ninety-one million, six hundred eighty thousand, seven hundred thirty-two".