47213780834565 has 96 divisors (see below), whose sum is σ = 84070933420032. Its totient is φ = 24500109312000.

The previous prime is 47213780834557. The next prime is 47213780834569. The reversal of 47213780834565 is 56543808731274.

It is a happy number.

47213780834565 is a `hidden beast` number, since 4 + 7 + 2 + 1 + 37 + 8 + 0 + 8 + 34 + 565 = 666.

It is not a de Polignac number, because 47213780834565 - 2³ = 47213780834557 is a prime.

It is a super-2 number, since 2×47213780834565² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47213780834569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 256057605 + ... + 256241925.

It is an arithmetic number, because the mean of its divisors is an integer number (875738889792).

Almost surely, 2^{47213780834565} is an apocalyptic number.

47213780834565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47213780834565 is a deficient number, since it is larger than the sum of its proper divisors (36857152585467).

47213780834565 is a wasteful number, since it uses less digits than its factorization.

47213780834565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185091 (or 185088 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 63.

The spelling of 47213780834565 in words is "forty-seven trillion, two hundred thirteen billion, seven hundred eighty million, eight hundred thirty-four thousand, five hundred sixty-five".