5165505566 has 64 divisors (see below), whose sum is σ = 8965555200. Its totient is φ = 2212189056.

The previous prime is 5165505563. The next prime is 5165505599. The reversal of 5165505566 is 6655055615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165505563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7910096 + ... + 7910748.

It is an arithmetic number, because the mean of its divisors is an integer number (140086800).

Almost surely, 2^5165505566 is an apocalyptic number.

5165505566 is a deficient number, since it is larger than the sum of its proper divisors (3800049634).

5165505566 is a wasteful number, since it uses less digits than its factorization.

5165505566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 675000, while the sum is 44.

The square root of 5165505566 is about 71871.4516758915. The cubic root of 5165505566 is about 1728.6388846209.

The spelling of 5165505566 in words is "five billion, one hundred sixty-five million, five hundred five thousand, five hundred sixty-six".