78463241275361 has 2 divisors, whose sum is σ = 78463241275362. Its totient is φ = 78463241275360.

The previous prime is 78463241275219. The next prime is 78463241275469. The reversal of 78463241275361 is 16357214236487.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55291716505600 + 23171524769761 = 7435840^2 + 4813681^2 .

It is an emirp because it is prime and its reverse (16357214236487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78463241275361 - 2³⁸ = 78188363368417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78463241275361.

It is not a weakly prime, because it can be changed into another prime (78463241275061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39231620637680 + 39231620637681.

It is an arithmetic number, because the mean of its divisors is an integer number (39231620637681).

Almost surely, 2^{78463241275361} is an apocalyptic number.

It is an amenable number.

78463241275361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78463241275361 is an equidigital number, since it uses as much as digits as its factorization.

78463241275361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 59.

The spelling of 78463241275361 in words is "seventy-eight trillion, four hundred sixty-three billion, two hundred forty-one million, two hundred seventy-five thousand, three hundred sixty-one".