78298379179 has 2 divisors, whose sum is σ = 78298379180. Its totient is φ = 78298379178.

The previous prime is 78298379129. The next prime is 78298379197. The reversal of 78298379179 is 97197389287.

Together with next prime (78298379197) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (97197389287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78298379179 - 2⁹ = 78298378667 is a prime.

It is a super-2 number, since 2×78298379179² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78298379129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149189589 + 39149189590.

It is an arithmetic number, because the mean of its divisors is an integer number (39149189590).

Almost surely, 2^78298379179 is an apocalyptic number.

78298379179 is a deficient number, since it is larger than the sum of its proper divisors (1).

78298379179 is an equidigital number, since it uses as much as digits as its factorization.

78298379179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 70.

The spelling of 78298379179 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred seventy-nine thousand, one hundred seventy-nine".