6540767999 has 2 divisors, whose sum is σ = 6540768000. Its totient is φ = 6540767998.

The previous prime is 6540767957. The next prime is 6540768029. The reversal of 6540767999 is 9997670456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6540767999 - 2⁸ = 6540767743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6540767099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270383999 + 3270384000.

It is an arithmetic number, because the mean of its divisors is an integer number (3270384000).

Almost surely, 2^6540767999 is an apocalyptic number.

6540767999 is a deficient number, since it is larger than the sum of its proper divisors (1).

6540767999 is an equidigital number, since it uses as much as digits as its factorization.

6540767999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The square root of 6540767999 is about 80875.0146769693. The cubic root of 6540767999 is about 1870.1491677551.

The spelling of 6540767999 in words is "six billion, five hundred forty million, seven hundred sixty-seven thousand, nine hundred ninety-nine".