4561644566 has 8 divisors (see below), whose sum is σ = 6843564624. Its totient is φ = 2280456360.

The previous prime is 4561644541. The next prime is 4561644611. The reversal of 4561644566 is 6654461654.

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

It is a super-2 number, since 2×4561644566² = 41617202293034656712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4561644566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167105 + ... + 192476.

It is an arithmetic number, because the mean of its divisors is an integer number (855445578).

Almost surely, 2^4561644566 is an apocalyptic number.

4561644566 is a deficient number, since it is larger than the sum of its proper divisors (2281920058).

4561644566 is a wasteful number, since it uses less digits than its factorization.

4561644566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365926.

The product of its digits is 2073600, while the sum is 47.

The square root of 4561644566 is about 67539.9479271342. The cubic root of 4561644566 is about 1658.4681962075.

The spelling of 4561644566 in words is "four billion, five hundred sixty-one million, six hundred forty-four thousand, five hundred sixty-six".