66228836233919 has 16 divisors (see below), whose sum is σ = 66723473472000. Its totient is φ = 65736007055136.

The previous prime is 66228836233871. The next prime is 66228836234027. The reversal of 66228836233919 is 91933263882266.

It is a cyclic number.

It is not a de Polignac number, because 66228836233919 - 2⁸ = 66228836233663 is a prime.

It is a super-2 number, since 2×66228836233919² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66228836236919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138453692 + ... + 138931214.

It is an arithmetic number, because the mean of its divisors is an integer number (4170217092000).

Almost surely, 2^{66228836233919} is an apocalyptic number.

66228836233919 is a deficient number, since it is larger than the sum of its proper divisors (494637238081).

66228836233919 is a wasteful number, since it uses less digits than its factorization.

66228836233919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479414.

The product of its digits is 241864704, while the sum is 68.

The spelling of 66228836233919 in words is "sixty-six trillion, two hundred twenty-eight billion, eight hundred thirty-six million, two hundred thirty-three thousand, nine hundred nineteen".