5111005666 has 8 divisors (see below), whose sum is σ = 8256239964. Its totient is φ = 2358925680.

The previous prime is 5111005663. The next prime is 5111005727. The reversal of 5111005666 is 6665001115.

It can be written as a sum of positive squares in 2 ways, for example, as 5066450041 + 44555625 = 71179^2 + 6675^2 .

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

It is a super-2 number, since 2×5111005666² = 52244757835768207112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5111005661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98288545 + ... + 98288596.

Almost surely, 2^5111005666 is an apocalyptic number.

5111005666 is a deficient number, since it is larger than the sum of its proper divisors (3145234298).

5111005666 is a wasteful number, since it uses less digits than its factorization.

5111005666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196577156.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 5111005666 is about 71491.2978340721. The cubic root of 5111005666 is about 1722.5379049814.

The spelling of 5111005666 in words is "five billion, one hundred eleven million, five thousand, six hundred sixty-six".