66962487253 has 2 divisors, whose sum is σ = 66962487254. Its totient is φ = 66962487252.

The previous prime is 66962487239. The next prime is 66962487271. The reversal of 66962487253 is 35278426966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59923612849 + 7038874404 = 244793^2 + 83898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66962487253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66962487203) 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, 33481243626 + 33481243627.

It is an arithmetic number, because the mean of its divisors is an integer number (33481243627).

Almost surely, 2^66962487253 is an apocalyptic number.

It is an amenable number.

66962487253 is a deficient number, since it is larger than the sum of its proper divisors (1).

66962487253 is an equidigital number, since it uses as much as digits as its factorization.

66962487253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 58.

The spelling of 66962487253 in words is "sixty-six billion, nine hundred sixty-two million, four hundred eighty-seven thousand, two hundred fifty-three".