47045545818 has 8 divisors (see below), whose sum is σ = 94091091648. Its totient is φ = 15681848604.

The previous prime is 47045545747. The next prime is 47045545831. The reversal of 47045545818 is 81854554074.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

47045545818 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 3920462146 + ... + 3920462157.

It is an arithmetic number, because the mean of its divisors is an integer number (11761386456).

Almost surely, 2^47045545818 is an apocalyptic number.

47045545818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47045545818 is a wasteful number, since it uses less digits than its factorization.

47045545818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7840924308.

The product of its (nonzero) digits is 3584000, while the sum is 51.

The spelling of 47045545818 in words is "forty-seven billion, forty-five million, five hundred forty-five thousand, eight hundred eighteen".