78530342224409 has 2 divisors, whose sum is σ = 78530342224410. Its totient is φ = 78530342224408.

The previous prime is 78530342224303. The next prime is 78530342224427. The reversal of 78530342224409 is 90442224303587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49394583184384 + 29135759040025 = 7028128^2 + 5397755^2 .

It is a cyclic number.

It is not a de Polignac number, because 78530342224409 - 2²⁸ = 78530073788953 is a prime.

It is a super-2 number, since 2×78530342224409² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78530342254409) 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, 39265171112204 + 39265171112205.

It is an arithmetic number, because the mean of its divisors is an integer number (39265171112205).

Almost surely, 2^{78530342224409} is an apocalyptic number.

It is an amenable number.

78530342224409 is a deficient number, since it is larger than the sum of its proper divisors (1).

78530342224409 is an equidigital number, since it uses as much as digits as its factorization.

78530342224409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 78530342224409 in words is "seventy-eight trillion, five hundred thirty billion, three hundred forty-two million, two hundred twenty-four thousand, four hundred nine".