5165635666 has 16 divisors (see below), whose sum is σ = 7979171904. Its totient is φ = 2506677264.

The previous prime is 5165635649. The next prime is 5165635687. The reversal of 5165635666 is 6665365615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177790 + ... + 204793.

It is an arithmetic number, because the mean of its divisors is an integer number (498698244).

Almost surely, 2^5165635666 is an apocalyptic number.

5165635666 is a deficient number, since it is larger than the sum of its proper divisors (2813536238).

5165635666 is a wasteful number, since it uses less digits than its factorization.

5165635666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382785.

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

The square root of 5165635666 is about 71872.3567583532. The cubic root of 5165635666 is about 1728.6533971746.

The spelling of 5165635666 in words is "five billion, one hundred sixty-five million, six hundred thirty-five thousand, six hundred sixty-six".