66233131583 has 2 divisors, whose sum is σ = 66233131584. Its totient is φ = 66233131582.

The previous prime is 66233131477. The next prime is 66233131589. The reversal of 66233131583 is 38513133266.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66233131583 - 2¹² = 66233127487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66233131583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66233131589) 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 as a sum of consecutive naturals, namely, 33116565791 + 33116565792.

It is an arithmetic number, because the mean of its divisors is an integer number (33116565792).

Almost surely, 2^66233131583 is an apocalyptic number.

66233131583 is a deficient number, since it is larger than the sum of its proper divisors (1).

66233131583 is an equidigital number, since it uses as much as digits as its factorization.

66233131583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The spelling of 66233131583 in words is "sixty-six billion, two hundred thirty-three million, one hundred thirty-one thousand, five hundred eighty-three".