66224875833 has 32 divisors (see below), whose sum is σ = 100795845120. Its totient is φ = 42942493440.

The previous prime is 66224875819. The next prime is 66224875859. The reversal of 66224875833 is 33857842266.

66224875833 is a `hidden beast` number, since 6 + 622 + 4 + 8 + 7 + 5 + 8 + 3 + 3 = 666.

It is not a de Polignac number, because 66224875833 - 2³³ = 57634941241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66224875833.

It is not an unprimeable number, because it can be changed into a prime (66224871833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3618241 + ... + 3636497.

It is an arithmetic number, because the mean of its divisors is an integer number (3149870160).

Almost surely, 2^66224875833 is an apocalyptic number.

It is an amenable number.

66224875833 is a deficient number, since it is larger than the sum of its proper divisors (34570969287).

66224875833 is a wasteful number, since it uses less digits than its factorization.

66224875833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21934 (or 21928 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 66224875833 in words is "sixty-six billion, two hundred twenty-four million, eight hundred seventy-five thousand, eight hundred thirty-three".