6539742047 has 2 divisors, whose sum is σ = 6539742048. Its totient is φ = 6539742046.

The previous prime is 6539742043. The next prime is 6539742061. The reversal of 6539742047 is 7402479356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6539742047 - 2² = 6539742043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6539741992 and 6539742010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6539742043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269871023 + 3269871024.

It is an arithmetic number, because the mean of its divisors is an integer number (3269871024).

Almost surely, 2^6539742047 is an apocalyptic number.

6539742047 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539742047 is an equidigital number, since it uses as much as digits as its factorization.

6539742047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The square root of 6539742047 is about 80868.6716040272. The cubic root of 6539742047 is about 1870.0513819086.

The spelling of 6539742047 in words is "six billion, five hundred thirty-nine million, seven hundred forty-two thousand, forty-seven".