66763335433 has 2 divisors, whose sum is σ = 66763335434. Its totient is φ = 66763335432.

The previous prime is 66763335413. The next prime is 66763335481. The reversal of 66763335433 is 33453336766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55815480009 + 10947855424 = 236253^2 + 104632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66763335433 is a prime.

It is not a weakly prime, because it can be changed into another prime (66763335413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33381667716 + 33381667717.

It is an arithmetic number, because the mean of its divisors is an integer number (33381667717).

Almost surely, 2^66763335433 is an apocalyptic number.

It is an amenable number.

66763335433 is a deficient number, since it is larger than the sum of its proper divisors (1).

66763335433 is an equidigital number, since it uses as much as digits as its factorization.

66763335433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 49.

The spelling of 66763335433 in words is "sixty-six billion, seven hundred sixty-three million, three hundred thirty-five thousand, four hundred thirty-three".