47218111668 has 432 divisors, whose sum is σ = 158353715520. Its totient is φ = 11725959168.

The previous prime is 47218111639. The next prime is 47218111693. The reversal of 47218111668 is 86611181274.

47218111668 is a `hidden beast` number, since 472 + 1 + 8 + 1 + 116 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 133762180 + ... + 133762532.

Almost surely, 2^47218111668 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 47218111668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79176857760).

47218111668 is an abundant number, since it is smaller than the sum of its proper divisors (111135603852).

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

47218111668 is a wasteful number, since it uses less digits than its factorization.

47218111668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 704 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 47218111668 in words is "forty-seven billion, two hundred eighteen million, one hundred eleven thousand, six hundred sixty-eight".