17100972947 has 2 divisors, whose sum is σ = 17100972948. Its totient is φ = 17100972946.

The previous prime is 17100972937. The next prime is 17100972989. The reversal of 17100972947 is 74927900171.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17100972947 - 2²⁰ = 17099924371 is a prime.

It is not a weakly prime, because it can be changed into another prime (17100972937) 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, 8550486473 + 8550486474.

It is an arithmetic number, because the mean of its divisors is an integer number (8550486474).

Almost surely, 2^17100972947 is an apocalyptic number.

17100972947 is a deficient number, since it is larger than the sum of its proper divisors (1).

17100972947 is an equidigital number, since it uses as much as digits as its factorization.

17100972947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 47.

The spelling of 17100972947 in words is "seventeen billion, one hundred million, nine hundred seventy-two thousand, nine hundred forty-seven".