9166159401577 has 2 divisors, whose sum is σ = 9166159401578. Its totient is φ = 9166159401576.

The previous prime is 9166159401557. The next prime is 9166159401713. The reversal of 9166159401577 is 7751049516619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4702049633241 + 4464109768336 = 2168421^2 + 2112844^2 .

It is an emirp because it is prime and its reverse (7751049516619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9166159401577 - 2²⁷ = 9166025183849 is a prime.

It is not a weakly prime, because it can be changed into another prime (9166159401517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4583079700788 + 4583079700789.

It is an arithmetic number, because the mean of its divisors is an integer number (4583079700789).

Almost surely, 2^{9166159401577} is an apocalyptic number.

It is an amenable number.

9166159401577 is a deficient number, since it is larger than the sum of its proper divisors (1).

9166159401577 is an equidigital number, since it uses as much as digits as its factorization.

9166159401577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14288400, while the sum is 61.

The spelling of 9166159401577 in words is "nine trillion, one hundred sixty-six billion, one hundred fifty-nine million, four hundred one thousand, five hundred seventy-seven".