4161500661 has 8 divisors (see below), whose sum is σ = 5569143424. Its totient is φ = 2764095840.

The previous prime is 4161500647. The next prime is 4161500663. The reversal of 4161500661 is 1660051614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4161500661 - 2⁶ = 4161500597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161500663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558536 + ... + 2560161.

It is an arithmetic number, because the mean of its divisors is an integer number (696142928).

Almost surely, 2^4161500661 is an apocalyptic number.

It is an amenable number.

4161500661 is a deficient number, since it is larger than the sum of its proper divisors (1407642763).

4161500661 is a wasteful number, since it uses less digits than its factorization.

4161500661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118971.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 4161500661 is about 64509.6943179860. The cubic root of 4161500661 is about 1608.4836694918.

The spelling of 4161500661 in words is "four billion, one hundred sixty-one million, five hundred thousand, six hundred sixty-one".