5550000038666 has 4 divisors (see below), whose sum is σ = 8325000058002. Its totient is φ = 2775000019332.

The previous prime is 5550000038647. The next prime is 5550000038719. The reversal of 5550000038666 is 6668300000555.

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., 5468558865025 + 81441173641 = 2338495^2 + 285379^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387500009665 + ... + 1387500009668.

Almost surely, 2^{5550000038666} is an apocalyptic number.

5550000038666 is a deficient number, since it is larger than the sum of its proper divisors (2775000019336).

5550000038666 is a wasteful number, since it uses less digits than its factorization.

5550000038666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775000019335.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 5550000038666 in words is "five trillion, five hundred fifty billion, thirty-eight thousand, six hundred sixty-six".