6845071631 has 2 divisors, whose sum is σ = 6845071632. Its totient is φ = 6845071630.

The previous prime is 6845071627. The next prime is 6845071633. The reversal of 6845071631 is 1361705486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6845071631 - 2² = 6845071627 is a prime.

It is a super-2 number, since 2×6845071631² = 93710011267042000322, which contains 22 as substring.

Together with 6845071633, 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 (6845071633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422535815 + 3422535816.

It is an arithmetic number, because the mean of its divisors is an integer number (3422535816).

Almost surely, 2^6845071631 is an apocalyptic number.

6845071631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845071631 is an equidigital number, since it uses as much as digits as its factorization.

6845071631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 6845071631 is about 82734.9480630767. The cubic root of 6845071631 is about 1898.7130371536.

The spelling of 6845071631 in words is "six billion, eight hundred forty-five million, seventy-one thousand, six hundred thirty-one".