47820666845 has 8 divisors (see below), whose sum is σ = 65582628864. Its totient is φ = 32791314384.

The previous prime is 47820666841. The next prime is 47820666847. The reversal of 47820666845 is 54866602874.

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

It is a cyclic number.

It is not a de Polignac number, because 47820666845 - 2² = 47820666841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47820666841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683152349 + ... + 683152418.

It is an arithmetic number, because the mean of its divisors is an integer number (8197828608).

Almost surely, 2^47820666845 is an apocalyptic number.

It is an amenable number.

47820666845 is a deficient number, since it is larger than the sum of its proper divisors (17761962019).

47820666845 is a wasteful number, since it uses less digits than its factorization.

47820666845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366304779.

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 47820666845 in words is "forty-seven billion, eight hundred twenty million, six hundred sixty-six thousand, eight hundred forty-five".