6656342449 has 2 divisors, whose sum is σ = 6656342450. Its totient is φ = 6656342448.

The previous prime is 6656342437. The next prime is 6656342461. The reversal of 6656342449 is 9442436566.

It is a balanced prime because it is at equal distance from previous prime (6656342437) and next prime (6656342461).

It can be written as a sum of positive squares in only one way, i.e., 6273748849 + 382593600 = 79207^2 + 19560^2 .

It is a cyclic number.

It is not a de Polignac number, because 6656342449 - 2⁷ = 6656342321 is a prime.

It is not a weakly prime, because it can be changed into another prime (6656342419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328171224 + 3328171225.

It is an arithmetic number, because the mean of its divisors is an integer number (3328171225).

Almost surely, 2^6656342449 is an apocalyptic number.

It is an amenable number.

6656342449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6656342449 is an equidigital number, since it uses as much as digits as its factorization.

6656342449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 49.

The square root of 6656342449 is about 81586.4109334392. The cubic root of 6656342449 is about 1881.1000097280.

The spelling of 6656342449 in words is "six billion, six hundred fifty-six million, three hundred forty-two thousand, four hundred forty-nine".