47161027447 has 4 divisors (see below), whose sum is σ = 47161549656. Its totient is φ = 47160505240.

The previous prime is 47161027421. The next prime is 47161027451. The reversal of 47161027447 is 74472016174.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47161027447 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 (47161027457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86893 + ... + 319174.

It is an arithmetic number, because the mean of its divisors is an integer number (11790387414).

Almost surely, 2^47161027447 is an apocalyptic number.

47161027447 is a deficient number, since it is larger than the sum of its proper divisors (522209).

47161027447 is a wasteful number, since it uses less digits than its factorization.

47161027447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522208.

The product of its (nonzero) digits is 263424, while the sum is 43.

The spelling of 47161027447 in words is "forty-seven billion, one hundred sixty-one million, twenty-seven thousand, four hundred forty-seven".