78369396713 has 2 divisors, whose sum is σ = 78369396714. Its totient is φ = 78369396712.

The previous prime is 78369396683. The next prime is 78369396821. The reversal of 78369396713 is 31769396387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49567233769 + 28802162944 = 222637^2 + 169712^2 .

It is a cyclic number.

It is not a de Polignac number, because 78369396713 - 2¹⁴ = 78369380329 is a prime.

It is a super-2 number, since 2×78369396713² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78369396013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39184698356 + 39184698357.

It is an arithmetic number, because the mean of its divisors is an integer number (39184698357).

Almost surely, 2^78369396713 is an apocalyptic number.

It is an amenable number.

78369396713 is a deficient number, since it is larger than the sum of its proper divisors (1).

78369396713 is an equidigital number, since it uses as much as digits as its factorization.

78369396713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30862944, while the sum is 62.

The spelling of 78369396713 in words is "seventy-eight billion, three hundred sixty-nine million, three hundred ninety-six thousand, seven hundred thirteen".