6547653643 has 2 divisors, whose sum is σ = 6547653644. Its totient is φ = 6547653642.

The previous prime is 6547653509. The next prime is 6547653691. The reversal of 6547653643 is 3463567456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6547653643 - 2²⁵ = 6514099211 is a prime.

It is not a weakly prime, because it can be changed into another prime (6547653743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273826821 + 3273826822.

It is an arithmetic number, because the mean of its divisors is an integer number (3273826822).

Almost surely, 2^6547653643 is an apocalyptic number.

6547653643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6547653643 is an equidigital number, since it uses as much as digits as its factorization.

6547653643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 49.

The square root of 6547653643 is about 80917.5731408203. The cubic root of 6547653643 is about 1870.8051898675.

The spelling of 6547653643 in words is "six billion, five hundred forty-seven million, six hundred fifty-three thousand, six hundred forty-three".