4159501661 has 16 divisors (see below), whose sum is σ = 4860576000. Its totient is φ = 3558051504.

The previous prime is 4159501607. The next prime is 4159501669. The reversal of 4159501661 is 1661059514.

It is not a de Polignac number, because 4159501661 - 2³⁰ = 3085759837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4159501669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160475 + ... + 184583.

It is an arithmetic number, because the mean of its divisors is an integer number (303786000).

Almost surely, 2^4159501661 is an apocalyptic number.

It is an amenable number.

4159501661 is a deficient number, since it is larger than the sum of its proper divisors (701074339).

4159501661 is an equidigital number, since it uses as much as digits as its factorization.

4159501661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24633 (or 24619 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 4159501661 is about 64494.1986615851. The cubic root of 4159501661 is about 1608.2260802155.

The spelling of 4159501661 in words is "four billion, one hundred fifty-nine million, five hundred one thousand, six hundred sixty-one".