78512361327297 has 6 divisors (see below), whose sum is σ = 113406744139442. Its totient is φ = 52341574218192.

The previous prime is 78512361327293. The next prime is 78512361327329. The reversal of 78512361327297 is 79272316321587.

78512361327297 is a `hidden beast` number, since 7 + 8 + 5 + 1 + 2 + 3 + 613 + 2 + 7 + 2 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 77665020826176 + 847340501121 = 8812776^2 + 920511^2 .

It is not a de Polignac number, because 78512361327297 - 2² = 78512361327293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78512361327293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4361797851508 + ... + 4361797851525.

Almost surely, 2^{78512361327297} is an apocalyptic number.

It is an amenable number.

78512361327297 is a deficient number, since it is larger than the sum of its proper divisors (34894382812145).

78512361327297 is a wasteful number, since it uses less digits than its factorization.

78512361327297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8723595703039 (or 8723595703036 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 78512361327297 in words is "seventy-eight trillion, five hundred twelve billion, three hundred sixty-one million, three hundred twenty-seven thousand, two hundred ninety-seven".