5661556366 has 8 divisors (see below), whose sum is σ = 8493796224. Its totient is φ = 2830290960.

The previous prime is 5661556333. The next prime is 5661556387. The reversal of 5661556366 is 6636551665.

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

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, 228910 + ... + 252433.

It is an arithmetic number, because the mean of its divisors is an integer number (1061724528).

Almost surely, 2^5661556366 is an apocalyptic number.

5661556366 is a deficient number, since it is larger than the sum of its proper divisors (2832239858).

5661556366 is a wasteful number, since it uses less digits than its factorization.

5661556366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487226.

The product of its digits is 2916000, while the sum is 49.

The square root of 5661556366 is about 75243.3144272632. The cubic root of 5661556366 is about 1782.2909908516.

The spelling of 5661556366 in words is "five billion, six hundred sixty-one million, five hundred fifty-six thousand, three hundred sixty-six".