4045864561 has 8 divisors (see below), whose sum is σ = 4290141024. Its totient is φ = 3802286400.

The previous prime is 4045864547. The next prime is 4045864577. The reversal of 4045864561 is 1654685404.

4045864561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4045864561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4045864061) 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, 162615 + ... + 185836.

It is an arithmetic number, because the mean of its divisors is an integer number (536267628).

Almost surely, 2^4045864561 is an apocalyptic number.

It is an amenable number.

4045864561 is a deficient number, since it is larger than the sum of its proper divisors (244276463).

4045864561 is a wasteful number, since it uses less digits than its factorization.

4045864561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349151.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 4045864561 is about 63607.1109310901. The cubic root of 4045864561 is about 1593.4451307745.

The spelling of 4045864561 in words is "four billion, forty-five million, eight hundred sixty-four thousand, five hundred sixty-one".