78836428267 has 2 divisors, whose sum is σ = 78836428268. Its totient is φ = 78836428266.

The previous prime is 78836428241. The next prime is 78836428343. The reversal of 78836428267 is 76282463887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78836428267 - 2¹¹ = 78836426219 is a prime.

It is not a weakly prime, because it can be changed into another prime (78836428217) 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, 39418214133 + 39418214134.

It is an arithmetic number, because the mean of its divisors is an integer number (39418214134).

Almost surely, 2^78836428267 is an apocalyptic number.

78836428267 is a deficient number, since it is larger than the sum of its proper divisors (1).

78836428267 is an equidigital number, since it uses as much as digits as its factorization.

78836428267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43352064, while the sum is 61.

The spelling of 78836428267 in words is "seventy-eight billion, eight hundred thirty-six million, four hundred twenty-eight thousand, two hundred sixty-seven".