168040746451 has 2 divisors, whose sum is σ = 168040746452. Its totient is φ = 168040746450.

The previous prime is 168040746449. The next prime is 168040746487. The reversal of 168040746451 is 154647040861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168040746451 - 2¹ = 168040746449 is a prime.

It is a super-3 number, since 3×168040746451³ (a number of 35 digits) contains 333 as substring.

Together with 168040746449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (168040746421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84020373225 + 84020373226.

It is an arithmetic number, because the mean of its divisors is an integer number (84020373226).

Almost surely, 2^168040746451 is an apocalyptic number.

168040746451 is a deficient number, since it is larger than the sum of its proper divisors (1).

168040746451 is an equidigital number, since it uses as much as digits as its factorization.

168040746451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 168040746451 in words is "one hundred sixty-eight billion, forty million, seven hundred forty-six thousand, four hundred fifty-one".