4026145661 has 8 divisors (see below), whose sum is σ = 4169296800. Its totient is φ = 3883282480.

The previous prime is 4026145637. The next prime is 4026145681. The reversal of 4026145661 is 1665416204.

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

It is a cyclic number.

It is not a de Polignac number, because 4026145661 - 2⁶ = 4026145597 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 (4026145601) 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 7 ways as a sum of consecutive naturals, for example, 43331 + ... + 99648.

It is an arithmetic number, because the mean of its divisors is an integer number (521162100).

Almost surely, 2^4026145661 is an apocalyptic number.

It is an amenable number.

4026145661 is a deficient number, since it is larger than the sum of its proper divisors (143151139).

4026145661 is a wasteful number, since it uses less digits than its factorization.

4026145661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143979.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 4026145661 is about 63451.9161333998. The cubic root of 4026145661 is about 1590.8521809986.

The spelling of 4026145661 in words is "four billion, twenty-six million, one hundred forty-five thousand, six hundred sixty-one".