4161261145 has 16 divisors (see below), whose sum is σ = 5112119232. Its totient is φ = 3250013760.

The previous prime is 4161261119. The next prime is 4161261157. The reversal of 4161261145 is 5411621614.

It is not a de Polignac number, because 4161261145 - 2⁵ = 4161261113 is a prime.

It is a super-2 number, since 2×4161261145² = 34632188633773422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 654954 + ... + 661276.

It is an arithmetic number, because the mean of its divisors is an integer number (319507452).

Almost surely, 2^4161261145 is an apocalyptic number.

It is an amenable number.

4161261145 is a deficient number, since it is larger than the sum of its proper divisors (950858087).

4161261145 is a wasteful number, since it uses less digits than its factorization.

4161261145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432.

The product of its digits is 5760, while the sum is 31.

The square root of 4161261145 is about 64507.8378571162. The cubic root of 4161261145 is about 1608.4528100337.

Adding to 4161261145 its reverse (5411621614), we get a palindrome (9572882759).

The spelling of 4161261145 in words is "four billion, one hundred sixty-one million, two hundred sixty-one thousand, one hundred forty-five".