6560157649 has 2 divisors, whose sum is σ = 6560157650. Its totient is φ = 6560157648.

The previous prime is 6560157631. The next prime is 6560157661. The reversal of 6560157649 is 9467510656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6559866049 + 291600 = 80993^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 6560157649 - 2⁹ = 6560157137 is a prime.

It is not a weakly prime, because it can be changed into another prime (6560157679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280078824 + 3280078825.

It is an arithmetic number, because the mean of its divisors is an integer number (3280078825).

Almost surely, 2^6560157649 is an apocalyptic number.

It is an amenable number.

6560157649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6560157649 is an equidigital number, since it uses as much as digits as its factorization.

6560157649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 6560157649 is about 80994.8001355643. The cubic root of 6560157649 is about 1871.9953202310.

The spelling of 6560157649 in words is "six billion, five hundred sixty million, one hundred fifty-seven thousand, six hundred forty-nine".