6986541971 has 2 divisors, whose sum is σ = 6986541972. Its totient is φ = 6986541970.

The previous prime is 6986541959. The next prime is 6986541997. The reversal of 6986541971 is 1791456896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6986541971 - 2²² = 6982347667 is a prime.

It is not a weakly prime, because it can be changed into another prime (6986541941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493270985 + 3493270986.

It is an arithmetic number, because the mean of its divisors is an integer number (3493270986).

Almost surely, 2^6986541971 is an apocalyptic number.

6986541971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986541971 is an equidigital number, since it uses as much as digits as its factorization.

6986541971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 6986541971 is about 83585.5368529747. The cubic root of 6986541971 is about 1911.7044780381.

The spelling of 6986541971 in words is "six billion, nine hundred eighty-six million, five hundred forty-one thousand, nine hundred seventy-one".