47091128208 has 80 divisors (see below), whose sum is σ = 128619505920. Its totient is φ = 14805307008.

The previous prime is 47091128197. The next prime is 47091128213. The reversal of 47091128208 is 80282119074.

It is a self number, because there is not a number n which added to its sum of digits gives 47091128208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93291 + ... + 320757.

It is an arithmetic number, because the mean of its divisors is an integer number (1607743824).

Almost surely, 2^47091128208 is an apocalyptic number.

47091128208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47091128208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64309752960).

47091128208 is an abundant number, since it is smaller than the sum of its proper divisors (81528377712).

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

47091128208 is a wasteful number, since it uses less digits than its factorization.

47091128208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227724 (or 227718 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The spelling of 47091128208 in words is "forty-seven billion, ninety-one million, one hundred twenty-eight thousand, two hundred eight".