47817858816 has 432 divisors, whose sum is σ = 175992520704. Its totient is φ = 12609810432.

The previous prime is 47817858743. The next prime is 47817858821. The reversal of 47817858816 is 61885871874.

47817858816 is a `hidden beast` number, since 47 + 8 + 1 + 7 + 8 + 588 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5656705 + ... + 5665151.

Almost surely, 2^47817858816 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 47817858816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87996260352).

47817858816 is an abundant number, since it is smaller than the sum of its proper divisors (128174661888).

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

47817858816 is an equidigital number, since it uses as much as digits as its factorization.

47817858816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8498 (or 8472 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 63.

The spelling of 47817858816 in words is "forty-seven billion, eight hundred seventeen million, eight hundred fifty-eight thousand, eight hundred sixteen".