168422601256751 has 2 divisors, whose sum is σ = 168422601256752. Its totient is φ = 168422601256750.

The previous prime is 168422601256691. The next prime is 168422601256757. The reversal of 168422601256751 is 157652106224861.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (157652106224861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168422601256751 is a prime.

It is a super-2 number, since 2×168422601256751² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168422601256757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84211300628375 + 84211300628376.

It is an arithmetic number, because the mean of its divisors is an integer number (84211300628376).

Almost surely, 2^{168422601256751} is an apocalyptic number.

168422601256751 is a deficient number, since it is larger than the sum of its proper divisors (1).

168422601256751 is an equidigital number, since it uses as much as digits as its factorization.

168422601256751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 168422601256751 in words is "one hundred sixty-eight trillion, four hundred twenty-two billion, six hundred one million, two hundred fifty-six thousand, seven hundred fifty-one".