47205229018 has 4 divisors (see below), whose sum is σ = 70807843530. Its totient is φ = 23602614508.

The previous prime is 47205228991. The next prime is 47205229033. The reversal of 47205229018 is 81092250274.

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., 42562578249 + 4642650769 = 206307^2 + 68137^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11801307253 + ... + 11801307256.

Almost surely, 2^47205229018 is an apocalyptic number.

47205229018 is a deficient number, since it is larger than the sum of its proper divisors (23602614512).

47205229018 is a wasteful number, since it uses less digits than its factorization.

47205229018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23602614511.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 47205229018 in words is "forty-seven billion, two hundred five million, two hundred twenty-nine thousand, eighteen".