161126660 has 12 divisors (see below), whose sum is σ = 338366028. Its totient is φ = 64450656.

The previous prime is 161126653. The next prime is 161126683. The reversal of 161126660 is 66621161.

It can be written as a sum of positive squares in 2 ways, for example, as 104816644 + 56310016 = 10238^2 + 7504^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028147 + ... + 4028186.

It is an arithmetic number, because the mean of its divisors is an integer number (28197169).

Almost surely, 2^161126660 is an apocalyptic number.

161126660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161126660 is an abundant number, since it is smaller than the sum of its proper divisors (177239368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161126660 is a wasteful number, since it uses less digits than its factorization.

161126660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8056342 (or 8056340 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 161126660 is about 12693.5676624029. The cubic root of 161126660 is about 544.1548047396.

The spelling of 161126660 in words is "one hundred sixty-one million, one hundred twenty-six thousand, six hundred sixty".