168591680746 has 8 divisors (see below), whose sum is σ = 253154564640. Its totient is φ = 84206825868.

The previous prime is 168591680731. The next prime is 168591680759. The reversal of 168591680746 is 647086195861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×168591680746² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44504886 + ... + 44508673.

It is an arithmetic number, because the mean of its divisors is an integer number (31644320580).

Almost surely, 2^168591680746 is an apocalyptic number.

168591680746 is a deficient number, since it is larger than the sum of its proper divisors (84562883894).

168591680746 is an equidigital number, since it uses as much as digits as its factorization.

168591680746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89014508.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 168591680746 in words is "one hundred sixty-eight billion, five hundred ninety-one million, six hundred eighty thousand, seven hundred forty-six".