47135923856 has 80 divisors (see below), whose sum is σ = 108550909440. Its totient is φ = 19406200320.

The previous prime is 47135923841. The next prime is 47135923883. The reversal of 47135923856 is 65832953174.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47135923798 and 47135923807.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 255386 + ... + 399366.

It is an arithmetic number, because the mean of its divisors is an integer number (1356886368).

Almost surely, 2^47135923856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47135923856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54275454720).

47135923856 is an abundant number, since it is smaller than the sum of its proper divisors (61414985584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47135923856 is a wasteful number, since it uses less digits than its factorization.

47135923856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144112 (or 144106 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The spelling of 47135923856 in words is "forty-seven billion, one hundred thirty-five million, nine hundred twenty-three thousand, eight hundred fifty-six".