66673393351 has 2 divisors, whose sum is σ = 66673393352. Its totient is φ = 66673393350.

The previous prime is 66673393343. The next prime is 66673393403. The reversal of 66673393351 is 15339337666.

It is an a-pointer prime, because the next prime (66673393403) can be obtained adding 66673393351 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66673393351 - 2³ = 66673393343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66673393651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33336696675 + 33336696676.

It is an arithmetic number, because the mean of its divisors is an integer number (33336696676).

Almost surely, 2^66673393351 is an apocalyptic number.

66673393351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66673393351 is an equidigital number, since it uses as much as digits as its factorization.

66673393351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 52.

The spelling of 66673393351 in words is "sixty-six billion, six hundred seventy-three million, three hundred ninety-three thousand, three hundred fifty-one".