7844550856231 has 2 divisors, whose sum is σ = 7844550856232. Its totient is φ = 7844550856230.

The previous prime is 7844550856229. The next prime is 7844550856253. The reversal of 7844550856231 is 1326580554487.

It is a weak prime.

It is an emirp because it is prime and its reverse (1326580554487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7844550856231 - 2¹ = 7844550856229 is a prime.

It is a super-2 number, since 2×7844550856231² (a number of 27 digits) contains 22 as substring.

Together with 7844550856229, 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 (7844550850231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3922275428115 + 3922275428116.

It is an arithmetic number, because the mean of its divisors is an integer number (3922275428116).

Almost surely, 2^{7844550856231} is an apocalyptic number.

7844550856231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7844550856231 is an equidigital number, since it uses as much as digits as its factorization.

7844550856231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256000, while the sum is 58.

The spelling of 7844550856231 in words is "seven trillion, eight hundred forty-four billion, five hundred fifty million, eight hundred fifty-six thousand, two hundred thirty-one".