168364456751 has 4 divisors (see below), whose sum is σ = 172914847512. Its totient is φ = 163814065992.

The previous prime is 168364456699. The next prime is 168364456763. The reversal of 168364456751 is 157654463861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168364456751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168364455751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2275195325 + ... + 2275195398.

It is an arithmetic number, because the mean of its divisors is an integer number (43228711878).

Almost surely, 2^168364456751 is an apocalyptic number.

168364456751 is a deficient number, since it is larger than the sum of its proper divisors (4550390761).

168364456751 is an equidigital number, since it uses as much as digits as its factorization.

168364456751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550390760.

The product of its digits is 14515200, while the sum is 56.

The spelling of 168364456751 in words is "one hundred sixty-eight billion, three hundred sixty-four million, four hundred fifty-six thousand, seven hundred fifty-one".