47281988556 has 108 divisors (see below), whose sum is σ = 131697584200. Its totient is φ = 14292305280.

The previous prime is 47281988543. The next prime is 47281988581. The reversal of 47281988556 is 65588918274.

47281988556 is a `hidden beast` number, since 4 + 72 + 8 + 1 + 9 + 8 + 8 + 556 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 47281988493 and 47281988502.

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 35 ways as a sum of consecutive naturals, for example, 1768335 + ... + 1794873.

Almost surely, 2^47281988556 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 47281988556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65848792100).

47281988556 is an abundant number, since it is smaller than the sum of its proper divisors (84415595644).

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

47281988556 is a wasteful number, since it uses less digits than its factorization.

47281988556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26980 (or 26964 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 47281988556 in words is "forty-seven billion, two hundred eighty-one million, nine hundred eighty-eight thousand, five hundred fifty-six".