78958341739 has 2 divisors, whose sum is σ = 78958341740. Its totient is φ = 78958341738.

The previous prime is 78958341691. The next prime is 78958341751. The reversal of 78958341739 is 93714385987.

It is a strong prime.

It is an emirp because it is prime and its reverse (93714385987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78958341739 - 2⁷ = 78958341611 is a prime.

It is not a weakly prime, because it can be changed into another prime (78958341779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39479170869 + 39479170870.

It is an arithmetic number, because the mean of its divisors is an integer number (39479170870).

Almost surely, 2^78958341739 is an apocalyptic number.

78958341739 is a deficient number, since it is larger than the sum of its proper divisors (1).

78958341739 is an equidigital number, since it uses as much as digits as its factorization.

78958341739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 64.

The spelling of 78958341739 in words is "seventy-eight billion, nine hundred fifty-eight million, three hundred forty-one thousand, seven hundred thirty-nine".