170919666479 has 2 divisors, whose sum is σ = 170919666480. Its totient is φ = 170919666478.

The previous prime is 170919666397. The next prime is 170919666517. The reversal of 170919666479 is 974666919071.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 170919666479 - 2¹² = 170919662383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170919666179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85459833239 + 85459833240.

It is an arithmetic number, because the mean of its divisors is an integer number (85459833240).

Almost surely, 2^170919666479 is an apocalyptic number.

170919666479 is a deficient number, since it is larger than the sum of its proper divisors (1).

170919666479 is an equidigital number, since it uses as much as digits as its factorization.

170919666479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 65.

The spelling of 170919666479 in words is "one hundred seventy billion, nine hundred nineteen million, six hundred sixty-six thousand, four hundred seventy-nine".