6654554561 has 2 divisors, whose sum is σ = 6654554562. Its totient is φ = 6654554560.

The previous prime is 6654554551. The next prime is 6654554563. The reversal of 6654554561 is 1654554566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3965094961 + 2689459600 = 62969^2 + 51860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6654554561 is a prime.

Together with 6654554563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6654554563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327277280 + 3327277281.

It is an arithmetic number, because the mean of its divisors is an integer number (3327277281).

Almost surely, 2^6654554561 is an apocalyptic number.

It is an amenable number.

6654554561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6654554561 is an equidigital number, since it uses as much as digits as its factorization.

6654554561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160000, while the sum is 47.

The square root of 6654554561 is about 81575.4531767982. The cubic root of 6654554561 is about 1880.9315740182.

The spelling of 6654554561 in words is "six billion, six hundred fifty-four million, five hundred fifty-four thousand, five hundred sixty-one".