66673666733351 has 2 divisors, whose sum is σ = 66673666733352. Its totient is φ = 66673666733350.

The previous prime is 66673666733329. The next prime is 66673666733381. The reversal of 66673666733351 is 15333766637666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66673666733351 - 2²⁶ = 66673599624487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66673666733381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33336833366675 + 33336833366676.

It is an arithmetic number, because the mean of its divisors is an integer number (33336833366676).

Almost surely, 2^{66673666733351} is an apocalyptic number.

66673666733351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66673666733351 is an equidigital number, since it uses as much as digits as its factorization.

66673666733351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 925888320, while the sum is 68.

The spelling of 66673666733351 in words is "sixty-six trillion, six hundred seventy-three billion, six hundred sixty-six million, seven hundred thirty-three thousand, three hundred fifty-one".