170973008491 has 2 divisors, whose sum is σ = 170973008492. Its totient is φ = 170973008490.

The previous prime is 170973008483. The next prime is 170973008497. The reversal of 170973008491 is 194800379071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170973008491 - 2³ = 170973008483 is a prime.

It is not a weakly prime, because it can be changed into another prime (170973008497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85486504245 + 85486504246.

It is an arithmetic number, because the mean of its divisors is an integer number (85486504246).

Almost surely, 2^170973008491 is an apocalyptic number.

170973008491 is a deficient number, since it is larger than the sum of its proper divisors (1).

170973008491 is an equidigital number, since it uses as much as digits as its factorization.

170973008491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 49.

The spelling of 170973008491 in words is "one hundred seventy billion, nine hundred seventy-three million, eight thousand, four hundred ninety-one".