78126163 has 2 divisors, whose sum is σ = 78126164. Its totient is φ = 78126162.

The previous prime is 78126143. The next prime is 78126211. The reversal of 78126163 is 36162187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78126163 - 2⁹ = 78125651 is a prime.

It is a super-2 number, since 2×78126163² = 12207394690205138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78126143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39063081 + 39063082.

It is an arithmetic number, because the mean of its divisors is an integer number (39063082).

Almost surely, 2^78126163 is an apocalyptic number.

78126163 is a deficient number, since it is larger than the sum of its proper divisors (1).

78126163 is an equidigital number, since it uses as much as digits as its factorization.

78126163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 78126163 is about 8838.9005538019. The cubic root of 78126163 is about 427.4961079408.

The spelling of 78126163 in words is "seventy-eight million, one hundred twenty-six thousand, one hundred sixty-three".