65886267977 has 2 divisors, whose sum is σ = 65886267978. Its totient is φ = 65886267976.

The previous prime is 65886267961. The next prime is 65886268003. The reversal of 65886267977 is 77976268856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64473335056 + 1412932921 = 253916^2 + 37589^2 .

It is a cyclic number.

It is not a de Polignac number, because 65886267977 - 2⁴ = 65886267961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65886267977.

It is not a weakly prime, because it can be changed into another prime (65886261977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32943133988 + 32943133989.

It is an arithmetic number, because the mean of its divisors is an integer number (32943133989).

Almost surely, 2^65886267977 is an apocalyptic number.

It is an amenable number.

65886267977 is a deficient number, since it is larger than the sum of its proper divisors (1).

65886267977 is an equidigital number, since it uses as much as digits as its factorization.

65886267977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 426746880, while the sum is 71.

The spelling of 65886267977 in words is "sixty-five billion, eight hundred eighty-six million, two hundred sixty-seven thousand, nine hundred seventy-seven".