6845438071 has 2 divisors, whose sum is σ = 6845438072. Its totient is φ = 6845438070.

The previous prime is 6845438069. The next prime is 6845438101. The reversal of 6845438071 is 1708345486.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6845438071 - 2¹ = 6845438069 is a prime.

Together with 6845438069, 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 (6845438021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422719035 + 3422719036.

It is an arithmetic number, because the mean of its divisors is an integer number (3422719036).

Almost surely, 2^6845438071 is an apocalyptic number.

6845438071 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845438071 is an equidigital number, since it uses as much as digits as its factorization.

6845438071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 6845438071 is about 82737.1625752298. The cubic root of 6845438071 is about 1898.7469180744.

The spelling of 6845438071 in words is "six billion, eight hundred forty-five million, four hundred thirty-eight thousand, seventy-one".