47385541566 has 240 divisors, whose sum is σ = 125952572592. Its totient is φ = 13254658560.

The previous prime is 47385541561. The next prime is 47385541571. The reversal of 47385541566 is 66514558374.

It is a happy number.

47385541566 is a `hidden beast` number, since 4 + 7 + 38 + 5 + 5 + 41 + 566 = 666.

It is an interprime number because it is at equal distance from previous prime (47385541561) and next prime (47385541571).

It is a super-2 number, since 2×47385541566² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47385541561) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 17660061 + ... + 17662743.

Almost surely, 2^47385541566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47385541566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62976286296).

47385541566 is an abundant number, since it is smaller than the sum of its proper divisors (78567031026).

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

47385541566 is a wasteful number, since it uses less digits than its factorization.

47385541566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789 (or 2769 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 47385541566 in words is "forty-seven billion, three hundred eighty-five million, five hundred forty-one thousand, five hundred sixty-six".