78619689259 has 2 divisors, whose sum is σ = 78619689260. Its totient is φ = 78619689258.

The previous prime is 78619689241. The next prime is 78619689263. The reversal of 78619689259 is 95298691687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78619689259 - 2¹⁷ = 78619558187 is a prime.

It is not a weakly prime, because it can be changed into another prime (78619689289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39309844629 + 39309844630.

It is an arithmetic number, because the mean of its divisors is an integer number (39309844630).

Almost surely, 2^78619689259 is an apocalyptic number.

78619689259 is a deficient number, since it is larger than the sum of its proper divisors (1).

78619689259 is an equidigital number, since it uses as much as digits as its factorization.

78619689259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 70.

The spelling of 78619689259 in words is "seventy-eight billion, six hundred nineteen million, six hundred eighty-nine thousand, two hundred fifty-nine".