4533556661 has 8 divisors (see below), whose sum is σ = 4612335000. Its totient is φ = 4454922240.

The previous prime is 4533556627. The next prime is 4533556663. The reversal of 4533556661 is 1666553354.

It can be written as a sum of positive squares in 4 ways, for example, as 1062108100 + 3471448561 = 32590^2 + 58919^2 .

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 4533556661 - 2³⁰ = 3459814837 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 (4533556663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28565 + ... + 99413.

It is an arithmetic number, because the mean of its divisors is an integer number (576541875).

Almost surely, 2^4533556661 is an apocalyptic number.

It is an amenable number.

4533556661 is a deficient number, since it is larger than the sum of its proper divisors (78778339).

4533556661 is a wasteful number, since it uses less digits than its factorization.

4533556661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71959.

The product of its digits is 972000, while the sum is 44.

The square root of 4533556661 is about 67331.6913570423. The cubic root of 4533556661 is about 1655.0572307953.

The spelling of 4533556661 in words is "four billion, five hundred thirty-three million, five hundred fifty-six thousand, six hundred sixty-one".