47218991904 has 576 divisors, whose sum is σ = 169775585280. Its totient is φ = 12704186880.

The previous prime is 47218991893. The next prime is 47218991947. The reversal of 47218991904 is 40919981274.

47218991904 is a `hidden beast` number, since 472 + 1 + 89 + 9 + 1 + 90 + 4 = 666.

47218991904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69134347 + ... + 69135029.

It is an arithmetic number, because the mean of its divisors is an integer number (294749280).

Almost surely, 2^47218991904 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 47218991904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84887792640).

47218991904 is an abundant number, since it is smaller than the sum of its proper divisors (122556593376).

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

47218991904 is a wasteful number, since it uses less digits than its factorization.

47218991904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 47218991904 in words is "forty-seven billion, two hundred eighteen million, nine hundred ninety-one thousand, nine hundred four".