47638720185 has 32 divisors (see below), whose sum is σ = 87120513792. Its totient is φ = 21775272960.

The previous prime is 47638720183. The next prime is 47638720189. The reversal of 47638720185 is 58102783674.

It is not a de Polignac number, because 47638720185 - 2¹ = 47638720183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47638720183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204525 + ... + 1243445.

It is an arithmetic number, because the mean of its divisors is an integer number (2722516056).

Almost surely, 2^47638720185 is an apocalyptic number.

It is an amenable number.

47638720185 is a deficient number, since it is larger than the sum of its proper divisors (39481793607).

47638720185 is a wasteful number, since it uses less digits than its factorization.

47638720185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50593.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 47638720185 in words is "forty-seven billion, six hundred thirty-eight million, seven hundred twenty thousand, one hundred eighty-five".