5012111666 has 16 divisors (see below), whose sum is σ = 8154571320. Its totient is φ = 2301112320.

The previous prime is 5012111659. The next prime is 5012111711. The reversal of 5012111666 is 6661112105.

It can be written as a sum of positive squares in 4 ways, for example, as 2127884641 + 2884227025 = 46129^2 + 53705^2 .

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, 1796351 + ... + 1799138.

Almost surely, 2^5012111666 is an apocalyptic number.

5012111666 is a deficient number, since it is larger than the sum of its proper divisors (3142459654).

5012111666 is a wasteful number, since it uses less digits than its factorization.

5012111666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595549.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 5012111666 is about 70796.2687293617. The cubic root of 5012111666 is about 1711.3555438299.

The spelling of 5012111666 in words is "five billion, twelve million, one hundred eleven thousand, six hundred sixty-six".