78791610211 has 2 divisors, whose sum is σ = 78791610212. Its totient is φ = 78791610210.

The previous prime is 78791610203. The next prime is 78791610241. The reversal of 78791610211 is 11201619787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78791610211 - 2³ = 78791610203 is a prime.

It is not a weakly prime, because it can be changed into another prime (78791610241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39395805105 + 39395805106.

It is an arithmetic number, because the mean of its divisors is an integer number (39395805106).

Almost surely, 2^78791610211 is an apocalyptic number.

78791610211 is a deficient number, since it is larger than the sum of its proper divisors (1).

78791610211 is an equidigital number, since it uses as much as digits as its factorization.

78791610211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 43.

The spelling of 78791610211 in words is "seventy-eight billion, seven hundred ninety-one million, six hundred ten thousand, two hundred eleven".