78218582341087 has 2 divisors, whose sum is σ = 78218582341088. Its totient is φ = 78218582341086.

The previous prime is 78218582341063. The next prime is 78218582341099. The reversal of 78218582341087 is 78014328581287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78218582341087 - 2¹⁵ = 78218582308319 is a prime.

It is a super-2 number, since 2×78218582341087² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78218582341057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39109291170543 + 39109291170544.

It is an arithmetic number, because the mean of its divisors is an integer number (39109291170544).

Almost surely, 2^{78218582341087} is an apocalyptic number.

78218582341087 is a deficient number, since it is larger than the sum of its proper divisors (1).

78218582341087 is an equidigital number, since it uses as much as digits as its factorization.

78218582341087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48168960, while the sum is 64.

The spelling of 78218582341087 in words is "seventy-eight trillion, two hundred eighteen billion, five hundred eighty-two million, three hundred forty-one thousand, eighty-seven".