78470779319 has 2 divisors, whose sum is σ = 78470779320. Its totient is φ = 78470779318.

The previous prime is 78470779279. The next prime is 78470779339. The reversal of 78470779319 is 91397707487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78470779319 - 2¹² = 78470775223 is a prime.

It is a super-2 number, since 2×78470779319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78470779339) 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, 39235389659 + 39235389660.

It is an arithmetic number, because the mean of its divisors is an integer number (39235389660).

Almost surely, 2^78470779319 is an apocalyptic number.

78470779319 is a deficient number, since it is larger than the sum of its proper divisors (1).

78470779319 is an equidigital number, since it uses as much as digits as its factorization.

78470779319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18670176, while the sum is 62.

The spelling of 78470779319 in words is "seventy-eight billion, four hundred seventy million, seven hundred seventy-nine thousand, three hundred nineteen".