66291307351 has 2 divisors, whose sum is σ = 66291307352. Its totient is φ = 66291307350.

The previous prime is 66291307349. The next prime is 66291307391. The reversal of 66291307351 is 15370319266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66291307351 - 2¹ = 66291307349 is a prime.

Together with 66291307349, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 66291307298 and 66291307307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66291307391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33145653675 + 33145653676.

It is an arithmetic number, because the mean of its divisors is an integer number (33145653676).

Almost surely, 2^66291307351 is an apocalyptic number.

66291307351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66291307351 is an equidigital number, since it uses as much as digits as its factorization.

66291307351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 66291307351 in words is "sixty-six billion, two hundred ninety-one million, three hundred seven thousand, three hundred fifty-one".