17155056049 has 2 divisors, whose sum is σ = 17155056050. Its totient is φ = 17155056048.

The previous prime is 17155056001. The next prime is 17155056103. The reversal of 17155056049 is 94065055171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11670913024 + 5484143025 = 108032^2 + 74055^2 .

It is a cyclic number.

It is not a de Polignac number, because 17155056049 - 2⁷ = 17155055921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17155055996 and 17155056014.

It is not a weakly prime, because it can be changed into another prime (17155056649) 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, 8577528024 + 8577528025.

It is an arithmetic number, because the mean of its divisors is an integer number (8577528025).

Almost surely, 2^17155056049 is an apocalyptic number.

It is an amenable number.

17155056049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17155056049 is an equidigital number, since it uses as much as digits as its factorization.

17155056049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 43.

The spelling of 17155056049 in words is "seventeen billion, one hundred fifty-five million, fifty-six thousand, forty-nine".