78587285807 has 2 divisors, whose sum is σ = 78587285808. Its totient is φ = 78587285806.

The previous prime is 78587285717. The next prime is 78587285809. The reversal of 78587285807 is 70858278587.

It is a strong prime.

It is an emirp because it is prime and its reverse (70858278587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78587285807 - 2¹⁸ = 78587023663 is a prime.

It is a super-2 number, since 2×78587285807² (a number of 23 digits) contains 22 as substring.

Together with 78587285809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78587285809) 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, 39293642903 + 39293642904.

It is an arithmetic number, because the mean of its divisors is an integer number (39293642904).

Almost surely, 2^78587285807 is an apocalyptic number.

78587285807 is a deficient number, since it is larger than the sum of its proper divisors (1).

78587285807 is an equidigital number, since it uses as much as digits as its factorization.

78587285807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70246400, while the sum is 65.

The spelling of 78587285807 in words is "seventy-eight billion, five hundred eighty-seven million, two hundred eighty-five thousand, eight hundred seven".