47356618221 has 32 divisors (see below), whose sum is σ = 77213312640. Its totient is φ = 28446969600.

The previous prime is 47356618217. The next prime is 47356618241. The reversal of 47356618221 is 12281665374.

47356618221 is a `hidden beast` number, since 4 + 7 + 3 + 5 + 6 + 618 + 2 + 21 = 666.

It is not a de Polignac number, because 47356618221 - 2² = 47356618217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47356618201) 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 31 ways as a sum of consecutive naturals, for example, 671970 + ... + 739091.

It is an arithmetic number, because the mean of its divisors is an integer number (2412916020).

Almost surely, 2^47356618221 is an apocalyptic number.

It is an amenable number.

47356618221 is a deficient number, since it is larger than the sum of its proper divisors (29856694419).

47356618221 is a wasteful number, since it uses less digits than its factorization.

47356618221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411194 (or 1411188 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 47356618221 in words is "forty-seven billion, three hundred fifty-six million, six hundred eighteen thousand, two hundred twenty-one".