78112101969271 has 2 divisors, whose sum is σ = 78112101969272. Its totient is φ = 78112101969270.

The previous prime is 78112101969233. The next prime is 78112101969287. The reversal of 78112101969271 is 17296910121187.

It is a strong prime.

It is an emirp because it is prime and its reverse (17296910121187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78112101969271 - 2¹³ = 78112101961079 is a prime.

It is a super-2 number, since 2×78112101969271² (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 (78112101969571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39056050984635 + 39056050984636.

It is an arithmetic number, because the mean of its divisors is an integer number (39056050984636).

Almost surely, 2^{78112101969271} is an apocalyptic number.

78112101969271 is a deficient number, since it is larger than the sum of its proper divisors (1).

78112101969271 is an equidigital number, since it uses as much as digits as its factorization.

78112101969271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 55.

The spelling of 78112101969271 in words is "seventy-eight trillion, one hundred twelve billion, one hundred one million, nine hundred sixty-nine thousand, two hundred seventy-one".