47818205849 has 4 divisors (see below), whose sum is σ = 47820510480. Its totient is φ = 47815901220.

The previous prime is 47818205801. The next prime is 47818205887. The reversal of 47818205849 is 94850281874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47818205849 - 2³² = 43523238553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47818205794 and 47818205803.

It is not an unprimeable number, because it can be changed into a prime (47818205899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120907 + ... + 1162784.

It is an arithmetic number, because the mean of its divisors is an integer number (11955127620).

Almost surely, 2^47818205849 is an apocalyptic number.

It is an amenable number.

47818205849 is a deficient number, since it is larger than the sum of its proper divisors (2304631).

47818205849 is a wasteful number, since it uses less digits than its factorization.

47818205849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304630.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The spelling of 47818205849 in words is "forty-seven billion, eight hundred eighteen million, two hundred five thousand, eight hundred forty-nine".