166794289579 has 2 divisors, whose sum is σ = 166794289580. Its totient is φ = 166794289578.

The previous prime is 166794289553. The next prime is 166794289589. The reversal of 166794289579 is 975982497661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166794289579 - 2¹¹ = 166794287531 is a prime.

It is not a weakly prime, because it can be changed into another prime (166794289589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83397144789 + 83397144790.

It is an arithmetic number, because the mean of its divisors is an integer number (83397144790).

Almost surely, 2^166794289579 is an apocalyptic number.

166794289579 is a deficient number, since it is larger than the sum of its proper divisors (1).

166794289579 is an equidigital number, since it uses as much as digits as its factorization.

166794289579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 73.

The spelling of 166794289579 in words is "one hundred sixty-six billion, seven hundred ninety-four million, two hundred eighty-nine thousand, five hundred seventy-nine".