47949478663 has 4 divisors (see below), whose sum is σ = 47950417648. Its totient is φ = 47948539680.

The previous prime is 47949478651. The next prime is 47949478669. The reversal of 47949478663 is 36687494974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47949478663 - 2²¹ = 47947381511 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 (47949478669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388203 + ... + 496588.

It is an arithmetic number, because the mean of its divisors is an integer number (11987604412).

Almost surely, 2^47949478663 is an apocalyptic number.

47949478663 is a deficient number, since it is larger than the sum of its proper divisors (938985).

47949478663 is an equidigital number, since it uses as much as digits as its factorization.

47949478663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938984.

The product of its digits is 219469824, while the sum is 67.

The spelling of 47949478663 in words is "forty-seven billion, nine hundred forty-nine million, four hundred seventy-eight thousand, six hundred sixty-three".