78396109165343 has 2 divisors, whose sum is σ = 78396109165344. Its totient is φ = 78396109165342.

The previous prime is 78396109165303. The next prime is 78396109165397. The reversal of 78396109165343 is 34356190169387.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78396109165343 - 2²⁴ = 78396092388127 is a prime.

It is a super-3 number, since 3×78396109165343³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78396109165343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78396109165303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39198054582671 + 39198054582672.

It is an arithmetic number, because the mean of its divisors is an integer number (39198054582672).

Almost surely, 2^{78396109165343} is an apocalyptic number.

78396109165343 is a deficient number, since it is larger than the sum of its proper divisors (1).

78396109165343 is an equidigital number, since it uses as much as digits as its factorization.

78396109165343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 78396109165343 in words is "seventy-eight trillion, three hundred ninety-six billion, one hundred nine million, one hundred sixty-five thousand, three hundred forty-three".