7858322940887 has 2 divisors, whose sum is σ = 7858322940888. Its totient is φ = 7858322940886.

The previous prime is 7858322940847. The next prime is 7858322940889. The reversal of 7858322940887 is 7880492238587.

It is a strong prime.

It is an emirp because it is prime and its reverse (7880492238587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7858322940887 - 2⁸ = 7858322940631 is a prime.

Together with 7858322940889, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7858322940887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7858322940889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929161470443 + 3929161470444.

It is an arithmetic number, because the mean of its divisors is an integer number (3929161470444).

Almost surely, 2^{7858322940887} is an apocalyptic number.

7858322940887 is a deficient number, since it is larger than the sum of its proper divisors (1).

7858322940887 is an equidigital number, since it uses as much as digits as its factorization.

7858322940887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 433520640, while the sum is 71.

The spelling of 7858322940887 in words is "seven trillion, eight hundred fifty-eight billion, three hundred twenty-two million, nine hundred forty thousand, eight hundred eighty-seven".