78075687713 has 2 divisors, whose sum is σ = 78075687714. Its totient is φ = 78075687712.

The previous prime is 78075687659. The next prime is 78075687731. The reversal of 78075687713 is 31778657087.

Together with next prime (78075687731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50477507584 + 27598180129 = 224672^2 + 166127^2 .

It is a cyclic number.

It is not a de Polignac number, because 78075687713 - 2¹² = 78075683617 is a prime.

It is not a weakly prime, because it can be changed into another prime (78075687773) 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, 39037843856 + 39037843857.

It is an arithmetic number, because the mean of its divisors is an integer number (39037843857).

Almost surely, 2^78075687713 is an apocalyptic number.

It is an amenable number.

78075687713 is a deficient number, since it is larger than the sum of its proper divisors (1).

78075687713 is an equidigital number, since it uses as much as digits as its factorization.

78075687713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13829760, while the sum is 59.

The spelling of 78075687713 in words is "seventy-eight billion, seventy-five million, six hundred eighty-seven thousand, seven hundred thirteen".