166481825927 has 2 divisors, whose sum is σ = 166481825928. Its totient is φ = 166481825926.

The previous prime is 166481825891. The next prime is 166481825941. The reversal of 166481825927 is 729528184661.

It is a strong prime.

It is an emirp because it is prime and its reverse (729528184661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166481825927 - 2⁶ = 166481825863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166481825947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83240912963 + 83240912964.

It is an arithmetic number, because the mean of its divisors is an integer number (83240912964).

Almost surely, 2^166481825927 is an apocalyptic number.

166481825927 is a deficient number, since it is larger than the sum of its proper divisors (1).

166481825927 is an equidigital number, since it uses as much as digits as its factorization.

166481825927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 59.

The spelling of 166481825927 in words is "one hundred sixty-six billion, four hundred eighty-one million, eight hundred twenty-five thousand, nine hundred twenty-seven".