166151611 has 8 divisors (see below), whose sum is σ = 169225200. Its totient is φ = 163133584.

The previous prime is 166151603. The next prime is 166151621. The reversal of 166151611 is 116151661.

It is not a de Polignac number, because 166151611 - 2³ = 166151603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166151611.

It is not an unprimeable number, because it can be changed into a prime (166151621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204975 + ... + 205783.

It is an arithmetic number, because the mean of its divisors is an integer number (21153150).

Almost surely, 2^166151611 is an apocalyptic number.

166151611 is a deficient number, since it is larger than the sum of its proper divisors (3073589).

166151611 is an frugal number, since it uses more digits than its factorization.

166151611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 868 counting only the distinct ones).

The product of its digits is 1080, while the sum is 28.

The square root of 166151611 is about 12889.9810317936. The cubic root of 166151611 is about 549.7537310690.

The spelling of 166151611 in words is "one hundred sixty-six million, one hundred fifty-one thousand, six hundred eleven".