168591680759 has 2 divisors, whose sum is σ = 168591680760. Its totient is φ = 168591680758.

The previous prime is 168591680731. The next prime is 168591680791. The reversal of 168591680759 is 957086195861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168591680759 - 2⁸ = 168591680503 is a prime.

It is a super-2 number, since 2×168591680759² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168591680695 and 168591680704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168591680729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84295840379 + 84295840380.

It is an arithmetic number, because the mean of its divisors is an integer number (84295840380).

Almost surely, 2^168591680759 is an apocalyptic number.

168591680759 is a deficient number, since it is larger than the sum of its proper divisors (1).

168591680759 is an equidigital number, since it uses as much as digits as its factorization.

168591680759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32659200, while the sum is 65.

The spelling of 168591680759 in words is "one hundred sixty-eight billion, five hundred ninety-one million, six hundred eighty thousand, seven hundred fifty-nine".