47479433831 has 4 divisors (see below), whose sum is σ = 47940399312. Its totient is φ = 47018468352.

The previous prime is 47479433821. The next prime is 47479433851. The reversal of 47479433831 is 13833497474.

It is a happy number.

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

It is not a de Polignac number, because 47479433831 - 2³⁰ = 46405692007 is a prime.

It is a super-2 number, since 2×47479433831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47479433821) 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, 230482586 + ... + 230482791.

It is an arithmetic number, because the mean of its divisors is an integer number (11985099828).

Almost surely, 2^47479433831 is an apocalyptic number.

47479433831 is a deficient number, since it is larger than the sum of its proper divisors (460965481).

47479433831 is a wasteful number, since it uses less digits than its factorization.

47479433831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460965480.

The product of its digits is 6096384, while the sum is 53.

The spelling of 47479433831 in words is "forty-seven billion, four hundred seventy-nine million, four hundred thirty-three thousand, eight hundred thirty-one".