5044651666 has 4 divisors (see below), whose sum is σ = 7566977502. Its totient is φ = 2522325832.

The previous prime is 5044651649. The next prime is 5044651673. The reversal of 5044651666 is 6661564405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4465046041 + 579605625 = 66821^2 + 24075^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261162915 + ... + 1261162918.

Almost surely, 2^5044651666 is an apocalyptic number.

5044651666 is a deficient number, since it is larger than the sum of its proper divisors (2522325836).

5044651666 is a wasteful number, since it uses less digits than its factorization.

5044651666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522325835.

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 5044651666 is about 71025.7113023164. The cubic root of 5044651666 is about 1715.0510872819.

The spelling of 5044651666 in words is "five billion, forty-four million, six hundred fifty-one thousand, six hundred sixty-six".