66733383127 has 4 divisors (see below), whose sum is σ = 67119125400. Its totient is φ = 66347640856.

The previous prime is 66733383053. The next prime is 66733383203. The reversal of 66733383127 is 72138333766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66733383127 - 2³¹ = 64585899479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733383427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192870877 + ... + 192871222.

It is an arithmetic number, because the mean of its divisors is an integer number (16779781350).

Almost surely, 2^66733383127 is an apocalyptic number.

66733383127 is a deficient number, since it is larger than the sum of its proper divisors (385742273).

66733383127 is a wasteful number, since it uses less digits than its factorization.

66733383127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385742272.

The product of its digits is 2286144, while the sum is 49.

The spelling of 66733383127 in words is "sixty-six billion, seven hundred thirty-three million, three hundred eighty-three thousand, one hundred twenty-seven".