78740756827 has 2 divisors, whose sum is σ = 78740756828. Its totient is φ = 78740756826.

The previous prime is 78740756789. The next prime is 78740756837. The reversal of 78740756827 is 72865704787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78740756827 - 2¹¹ = 78740754779 is a prime.

It is not a weakly prime, because it can be changed into another prime (78740756837) 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, 39370378413 + 39370378414.

It is an arithmetic number, because the mean of its divisors is an integer number (39370378414).

Almost surely, 2^78740756827 is an apocalyptic number.

78740756827 is a deficient number, since it is larger than the sum of its proper divisors (1).

78740756827 is an equidigital number, since it uses as much as digits as its factorization.

78740756827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36879360, while the sum is 61.

The spelling of 78740756827 in words is "seventy-eight billion, seven hundred forty million, seven hundred fifty-six thousand, eight hundred twenty-seven".