78013711 has 2 divisors, whose sum is σ = 78013712. Its totient is φ = 78013710.

The previous prime is 78013709. The next prime is 78013717. The reversal of 78013711 is 11731087.

It is a weak prime.

It is an emirp because it is prime and its reverse (11731087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78013711 - 2¹ = 78013709 is a prime.

It is a super-2 number, since 2×78013711² = 12172278207983042, which contains 22 as substring.

Together with 78013709, it forms a pair of twin primes.

It is equal to p_4560319 and since 78013711 and 4560319 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78013711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78013717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39006855 + 39006856.

It is an arithmetic number, because the mean of its divisors is an integer number (39006856).

Almost surely, 2^78013711 is an apocalyptic number.

78013711 is a deficient number, since it is larger than the sum of its proper divisors (1).

78013711 is an equidigital number, since it uses as much as digits as its factorization.

78013711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 78013711 is about 8832.5370647397. The cubic root of 78013711 is about 427.2909019266.

Adding to 78013711 its reverse (11731087), we get a palindrome (89744798).

The spelling of 78013711 in words is "seventy-eight million, thirteen thousand, seven hundred eleven".