65972758917677 has 2 divisors, whose sum is σ = 65972758917678. Its totient is φ = 65972758917676.

The previous prime is 65972758917619. The next prime is 65972758917757. The reversal of 65972758917677 is 77671985727956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49008484367236 + 16964274550441 = 7000606^2 + 4118771^2 .

It is a cyclic number.

It is not a de Polignac number, because 65972758917677 - 2⁸ = 65972758917421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65972758917277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32986379458838 + 32986379458839.

It is an arithmetic number, because the mean of its divisors is an integer number (32986379458839).

Almost surely, 2^{65972758917677} is an apocalyptic number.

It is an amenable number.

65972758917677 is a deficient number, since it is larger than the sum of its proper divisors (1).

65972758917677 is an equidigital number, since it uses as much as digits as its factorization.

65972758917677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19603684800, while the sum is 86.

The spelling of 65972758917677 in words is "sixty-five trillion, nine hundred seventy-two billion, seven hundred fifty-eight million, nine hundred seventeen thousand, six hundred seventy-seven".