78795911 has 2 divisors, whose sum is σ = 78795912. Its totient is φ = 78795910.

The previous prime is 78795839. The next prime is 78795989. The reversal of 78795911 is 11959787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78795911 - 2¹⁰ = 78794887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78795511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39397955 + 39397956.

It is an arithmetic number, because the mean of its divisors is an integer number (39397956).

Almost surely, 2^78795911 is an apocalyptic number.

78795911 is a deficient number, since it is larger than the sum of its proper divisors (1).

78795911 is an equidigital number, since it uses as much as digits as its factorization.

78795911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 47.

The square root of 78795911 is about 8876.7060895357. The cubic root of 78795911 is about 428.7142247602.

The spelling of 78795911 in words is "seventy-eight million, seven hundred ninety-five thousand, nine hundred eleven".