6542907971 has 2 divisors, whose sum is σ = 6542907972. Its totient is φ = 6542907970.

The previous prime is 6542907953. The next prime is 6542908087. The reversal of 6542907971 is 1797092456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6542907971 - 2¹⁴ = 6542891587 is a prime.

It is not a weakly prime, because it can be changed into another prime (6542907071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271453985 + 3271453986.

It is an arithmetic number, because the mean of its divisors is an integer number (3271453986).

Almost surely, 2^6542907971 is an apocalyptic number.

6542907971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542907971 is an equidigital number, since it uses as much as digits as its factorization.

6542907971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 6542907971 is about 80888.2437131627. The cubic root of 6542907971 is about 1870.3531005082.

The spelling of 6542907971 in words is "six billion, five hundred forty-two million, nine hundred seven thousand, nine hundred seventy-one".