47820640444 has 12 divisors (see below), whose sum is σ = 85727245968. Its totient is φ = 23327141600.

The previous prime is 47820640327. The next prime is 47820640453. The reversal of 47820640444 is 44404602874.

It is a self number, because there is not a number n which added to its sum of digits gives 47820640444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145794472 + ... + 145794799.

It is an arithmetic number, because the mean of its divisors is an integer number (7143937164).

Almost surely, 2^47820640444 is an apocalyptic number.

It is an amenable number.

47820640444 is a deficient number, since it is larger than the sum of its proper divisors (37906605524).

47820640444 is a wasteful number, since it uses less digits than its factorization.

47820640444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291589316 (or 291589314 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 43.

The spelling of 47820640444 in words is "forty-seven billion, eight hundred twenty million, six hundred forty thousand, four hundred forty-four".