20047446318 has 8 divisors (see below), whose sum is σ = 40094892648. Its totient is φ = 6682482104.

The previous prime is 20047446313. The next prime is 20047446359. The reversal of 20047446318 is 81364474002.

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

20047446318 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20047446311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670620521 + ... + 1670620532.

It is an arithmetic number, because the mean of its divisors is an integer number (5011861581).

Almost surely, 2^20047446318 is an apocalyptic number.

20047446318 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.

20047446318 is a wasteful number, since it uses less digits than its factorization.

20047446318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341241058.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 20047446318 in words is "twenty billion, forty-seven million, four hundred forty-six thousand, three hundred eighteen".