6845751971 has 4 divisors (see below), whose sum is σ = 6852279000. Its totient is φ = 6839224944.

The previous prime is 6845751949. The next prime is 6845751989. The reversal of 6845751971 is 1791575486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6845751971 - 2⁶ = 6845751907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6845751071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3261941 + ... + 3264038.

It is an arithmetic number, because the mean of its divisors is an integer number (1713069750).

Almost surely, 2^6845751971 is an apocalyptic number.

6845751971 is a deficient number, since it is larger than the sum of its proper divisors (6527029).

6845751971 is a wasteful number, since it uses less digits than its factorization.

6845751971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527028.

The product of its digits is 2116800, while the sum is 53.

The square root of 6845751971 is about 82739.0595245075. The cubic root of 6845751971 is about 1898.7759402028.

The spelling of 6845751971 in words is "six billion, eight hundred forty-five million, seven hundred fifty-one thousand, nine hundred seventy-one".