66500511151 has 2 divisors, whose sum is σ = 66500511152. Its totient is φ = 66500511150.

The previous prime is 66500511109. The next prime is 66500511227. The reversal of 66500511151 is 15111500566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66500511151 - 2⁷ = 66500511023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66500581151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33250255575 + 33250255576.

It is an arithmetic number, because the mean of its divisors is an integer number (33250255576).

Almost surely, 2^66500511151 is an apocalyptic number.

66500511151 is a deficient number, since it is larger than the sum of its proper divisors (1).

66500511151 is an equidigital number, since it uses as much as digits as its factorization.

66500511151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 66500511151 in words is "sixty-six billion, five hundred million, five hundred eleven thousand, one hundred fifty-one".