47421820008 has 160 divisors (see below), whose sum is σ = 140924266560. Its totient is φ = 14847183360.

The previous prime is 47421820001. The next prime is 47421820027. The reversal of 47421820008 is 80002812474.

47421820008 is a `hidden beast` number, since 474 + 2 + 182 + 0 + 0 + 0 + 8 = 666.

It is a super-2 number, since 2×47421820008² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (47421820001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5757253 + ... + 5765483.

It is an arithmetic number, because the mean of its divisors is an integer number (880776666).

Almost surely, 2^47421820008 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 47421820008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70462133280).

47421820008 is an abundant number, since it is smaller than the sum of its proper divisors (93502446552).

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

47421820008 is a wasteful number, since it uses less digits than its factorization.

47421820008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789 (or 8776 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The spelling of 47421820008 in words is "forty-seven billion, four hundred twenty-one million, eight hundred twenty thousand, eight".