5051660018 has 4 divisors (see below), whose sum is σ = 7577490030. Its totient is φ = 2525830008.

The previous prime is 5051659999. The next prime is 5051660021. The reversal of 5051660018 is 8100661505.

It is a happy number.

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., 3919135609 + 1132524409 = 62603^2 + 33653^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262915003 + ... + 1262915006.

Almost surely, 2^5051660018 is an apocalyptic number.

5051660018 is a deficient number, since it is larger than the sum of its proper divisors (2525830012).

5051660018 is a wasteful number, since it uses less digits than its factorization.

5051660018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525830011.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 5051660018 is about 71075.0309039680. The cubic root of 5051660018 is about 1715.8449392420.

The spelling of 5051660018 in words is "five billion, fifty-one million, six hundred sixty thousand, eighteen".