4066990161 has 32 divisors (see below), whose sum is σ = 6191152128. Its totient is φ = 2356542720.

The previous prime is 4066990159. The next prime is 4066990201. The reversal of 4066990161 is 1610996604.

It is not a de Polignac number, because 4066990161 - 2¹ = 4066990159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4066990061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726 + ... + 90191.

It is an arithmetic number, because the mean of its divisors is an integer number (193473504).

Almost surely, 2^4066990161 is an apocalyptic number.

It is an amenable number.

4066990161 is a deficient number, since it is larger than the sum of its proper divisors (2124161967).

4066990161 is a wasteful number, since it uses less digits than its factorization.

4066990161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91001.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 4066990161 is about 63772.9579132096. The cubic root of 4066990161 is about 1596.2137243542.

The spelling of 4066990161 in words is "four billion, sixty-six million, nine hundred ninety thousand, one hundred sixty-one".