78152307566213 has 2 divisors, whose sum is σ = 78152307566214. Its totient is φ = 78152307566212.

The previous prime is 78152307566141. The next prime is 78152307566219. The reversal of 78152307566213 is 31266570325187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66584261766724 + 11568045799489 = 8159918^2 + 3401183^2 .

It is a cyclic number.

It is not a de Polignac number, because 78152307566213 - 2¹⁶ = 78152307500677 is a prime.

It is a super-3 number, since 3×78152307566213³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78152307566219) 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 as a sum of consecutive naturals, namely, 39076153783106 + 39076153783107.

It is an arithmetic number, because the mean of its divisors is an integer number (39076153783107).

Almost surely, 2^{78152307566213} is an apocalyptic number.

It is an amenable number.

78152307566213 is a deficient number, since it is larger than the sum of its proper divisors (1).

78152307566213 is an equidigital number, since it uses as much as digits as its factorization.

78152307566213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 78152307566213 in words is "seventy-eight trillion, one hundred fifty-two billion, three hundred seven million, five hundred sixty-six thousand, two hundred thirteen".