78112101969163 has 2 divisors, whose sum is σ = 78112101969164. Its totient is φ = 78112101969162.

The previous prime is 78112101969107. The next prime is 78112101969233. The reversal of 78112101969163 is 36196910121187.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78112101969163 is a prime.

It is a super-2 number, since 2×78112101969163² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78112101999163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39056050984581 + 39056050984582.

It is an arithmetic number, because the mean of its divisors is an integer number (39056050984582).

Almost surely, 2^{78112101969163} is an apocalyptic number.

78112101969163 is a deficient number, since it is larger than the sum of its proper divisors (1).

78112101969163 is an equidigital number, since it uses as much as digits as its factorization.

78112101969163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 78112101969163 in words is "seventy-eight trillion, one hundred twelve billion, one hundred one million, nine hundred sixty-nine thousand, one hundred sixty-three".