5187143666 has 48 divisors (see below), whose sum is σ = 8399409480. Its totient is φ = 2401781760.

The previous prime is 5187143639. The next prime is 5187143671. The reversal of 5187143666 is 6663417815.

It can be written as a sum of positive squares in 12 ways, for example, as 4340042641 + 847101025 = 65879^2 + 29105^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5187143666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17703416 + ... + 17703708.

Almost surely, 2^5187143666 is an apocalyptic number.

5187143666 is a deficient number, since it is larger than the sum of its proper divisors (3212265814).

5187143666 is a wasteful number, since it uses less digits than its factorization.

5187143666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 702 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 5187143666 is about 72021.8277052173. The cubic root of 5187143666 is about 1731.0492555693.

The spelling of 5187143666 in words is "five billion, one hundred eighty-seven million, one hundred forty-three thousand, six hundred sixty-six".