78327079759 has 2 divisors, whose sum is σ = 78327079760. Its totient is φ = 78327079758.

The previous prime is 78327079703. The next prime is 78327079771. The reversal of 78327079759 is 95797072387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78327079759 - 2¹¹ = 78327077711 is a prime.

It is a super-2 number, since 2×78327079759² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78327079759.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78327079799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39163539879 + 39163539880.

It is an arithmetic number, because the mean of its divisors is an integer number (39163539880).

Almost surely, 2^78327079759 is an apocalyptic number.

78327079759 is a deficient number, since it is larger than the sum of its proper divisors (1).

78327079759 is an equidigital number, since it uses as much as digits as its factorization.

78327079759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46675440, while the sum is 64.

The spelling of 78327079759 in words is "seventy-eight billion, three hundred twenty-seven million, seventy-nine thousand, seven hundred fifty-nine".