4044512661 has 32 divisors (see below), whose sum is σ = 6343434240. Its totient is φ = 2243785536.

The previous prime is 4044512623. The next prime is 4044512663. The reversal of 4044512661 is 1662154404.

4044512661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4044512661 - 2⁶ = 4044512597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044512663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366750 + ... + 377616.

It is an arithmetic number, because the mean of its divisors is an integer number (198232320).

Almost surely, 2^4044512661 is an apocalyptic number.

It is an amenable number.

4044512661 is a deficient number, since it is larger than the sum of its proper divisors (2298921579).

4044512661 is a wasteful number, since it uses less digits than its factorization.

4044512661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11393.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 4044512661 is about 63596.4830867242. The cubic root of 4044512661 is about 1593.2676311392.

The spelling of 4044512661 in words is "four billion, forty-four million, five hundred twelve thousand, six hundred sixty-one".