66763327533 has 16 divisors (see below), whose sum is σ = 106157838336. Its totient is φ = 36491756400.

The previous prime is 66763327507. The next prime is 66763327541. The reversal of 66763327533 is 33572336766.

It is not a de Polignac number, because 66763327533 - 2¹⁶ = 66763261997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66763327573) 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 15 ways as a sum of consecutive naturals, for example, 69112693 + ... + 69113658.

It is an arithmetic number, because the mean of its divisors is an integer number (6634864896).

Almost surely, 2^66763327533 is an apocalyptic number.

It is an amenable number.

66763327533 is a deficient number, since it is larger than the sum of its proper divisors (39394510803).

66763327533 is a wasteful number, since it uses less digits than its factorization.

66763327533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138226384.

The product of its digits is 8573040, while the sum is 51.

The spelling of 66763327533 in words is "sixty-six billion, seven hundred sixty-three million, three hundred twenty-seven thousand, five hundred thirty-three".