78854311 has 2 divisors, whose sum is σ = 78854312. Its totient is φ = 78854310.

The previous prime is 78854309. The next prime is 78854317. The reversal of 78854311 is 11345887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78854311 - 2¹ = 78854309 is a prime.

Together with 78854309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78854317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39427155 + 39427156.

It is an arithmetic number, because the mean of its divisors is an integer number (39427156).

Almost surely, 2^78854311 is an apocalyptic number.

78854311 is a deficient number, since it is larger than the sum of its proper divisors (1).

78854311 is an equidigital number, since it uses as much as digits as its factorization.

78854311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 37.

The square root of 78854311 is about 8879.9949887373. The cubic root of 78854311 is about 428.8201131984.

The spelling of 78854311 in words is "seventy-eight million, eight hundred fifty-four thousand, three hundred eleven".