17151661649 has 2 divisors, whose sum is σ = 17151661650. Its totient is φ = 17151661648.

The previous prime is 17151661601. The next prime is 17151661673. The reversal of 17151661649 is 94616615171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12343210000 + 4808451649 = 111100^2 + 69343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17151661649 is a prime.

It is not a weakly prime, because it can be changed into another prime (17151661699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8575830824 + 8575830825.

It is an arithmetic number, because the mean of its divisors is an integer number (8575830825).

Almost surely, 2^17151661649 is an apocalyptic number.

It is an amenable number.

17151661649 is a deficient number, since it is larger than the sum of its proper divisors (1).

17151661649 is an equidigital number, since it uses as much as digits as its factorization.

17151661649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The spelling of 17151661649 in words is "seventeen billion, one hundred fifty-one million, six hundred sixty-one thousand, six hundred forty-nine".