65677556256149 has 2 divisors, whose sum is σ = 65677556256150. Its totient is φ = 65677556256148.

The previous prime is 65677556256107. The next prime is 65677556256187. The reversal of 65677556256149 is 94165265577656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57659495758225 + 8018060497924 = 7593385^2 + 2831618^2 .

It is a cyclic number.

It is not a de Polignac number, because 65677556256149 - 2⁸ = 65677556255893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65677556256199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32838778128074 + 32838778128075.

It is an arithmetic number, because the mean of its divisors is an integer number (32838778128075).

Almost surely, 2^{65677556256149} is an apocalyptic number.

It is an amenable number.

65677556256149 is a deficient number, since it is larger than the sum of its proper divisors (1).

65677556256149 is an equidigital number, since it uses as much as digits as its factorization.

65677556256149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680000, while the sum is 74.

The spelling of 65677556256149 in words is "sixty-five trillion, six hundred seventy-seven billion, five hundred fifty-six million, two hundred fifty-six thousand, one hundred forty-nine".