4126145661 has 24 divisors (see below), whose sum is σ = 6503820960. Its totient is φ = 2499919200.

The previous prime is 4126145629. The next prime is 4126145677. The reversal of 4126145661 is 1665416214.

It is not a de Polignac number, because 4126145661 - 2⁵ = 4126145629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4126145161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 613326 + ... + 620016.

It is an arithmetic number, because the mean of its divisors is an integer number (270992540).

Almost surely, 2^4126145661 is an apocalyptic number.

It is an amenable number.

4126145661 is a deficient number, since it is larger than the sum of its proper divisors (2377675299).

4126145661 is a wasteful number, since it uses less digits than its factorization.

4126145661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12937 (or 12934 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 4126145661 is about 64235.0812329213. The cubic root of 4126145661 is about 1603.9156258802.

The spelling of 4126145661 in words is "four billion, one hundred twenty-six million, one hundred forty-five thousand, six hundred sixty-one".