5561020066 has 8 divisors (see below), whose sum is σ = 9533177280. Its totient is φ = 2383294308.

The previous prime is 5561020039. The next prime is 5561020081. The reversal of 5561020066 is 6600201655.

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

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, 198607846 + ... + 198607873.

It is an arithmetic number, because the mean of its divisors is an integer number (1191647160).

Almost surely, 2^5561020066 is an apocalyptic number.

5561020066 is a deficient number, since it is larger than the sum of its proper divisors (3972157214).

5561020066 is a wasteful number, since it uses less digits than its factorization.

5561020066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397215728.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5561020066 is about 74572.2472907985. The cubic root of 5561020066 is about 1771.6781159019.

The spelling of 5561020066 in words is "five billion, five hundred sixty-one million, twenty thousand, sixty-six".