170475506761649 has 2 divisors, whose sum is σ = 170475506761650. Its totient is φ = 170475506761648.

The previous prime is 170475506761633. The next prime is 170475506761717. The reversal of 170475506761649 is 946167605574071.

It is an a-pointer prime, because the next prime (170475506761717) can be obtained adding 170475506761649 to its sum of digits (68).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167935499574049 + 2540007187600 = 12958993^2 + 1593740^2 .

It is a cyclic number.

It is not a de Polignac number, because 170475506761649 - 2⁴ = 170475506761633 is a prime.

It is not a weakly prime, because it can be changed into another prime (170475506721649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85237753380824 + 85237753380825.

It is an arithmetic number, because the mean of its divisors is an integer number (85237753380825).

Almost surely, 2^{170475506761649} is an apocalyptic number.

It is an amenable number.

170475506761649 is a deficient number, since it is larger than the sum of its proper divisors (1).

170475506761649 is an equidigital number, since it uses as much as digits as its factorization.

170475506761649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 266716800, while the sum is 68.

The spelling of 170475506761649 in words is "one hundred seventy trillion, four hundred seventy-five billion, five hundred six million, seven hundred sixty-one thousand, six hundred forty-nine".