5003641666 has 4 divisors (see below), whose sum is σ = 7505462502. Its totient is φ = 2501820832.

The previous prime is 5003641639. The next prime is 5003641679. The reversal of 5003641666 is 6661463005.

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., 4902940441 + 100701225 = 70021^2 + 10035^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250910415 + ... + 1250910418.

Almost surely, 2^5003641666 is an apocalyptic number.

5003641666 is a deficient number, since it is larger than the sum of its proper divisors (2501820836).

5003641666 is a wasteful number, since it uses less digits than its factorization.

5003641666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501820835.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 5003641666 is about 70736.4238988656. The cubic root of 5003641666 is about 1710.3909900141.

The spelling of 5003641666 in words is "five billion, three million, six hundred forty-one thousand, six hundred sixty-six".