65717585851 has 2 divisors, whose sum is σ = 65717585852. Its totient is φ = 65717585850.

The previous prime is 65717585839. The next prime is 65717585863. The reversal of 65717585851 is 15858571756.

It is a balanced prime because it is at equal distance from previous prime (65717585839) and next prime (65717585863).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65717585851 is a prime.

It is not a weakly prime, because it can be changed into another prime (65717585251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858792925 + 32858792926.

It is an arithmetic number, because the mean of its divisors is an integer number (32858792926).

Almost surely, 2^65717585851 is an apocalyptic number.

65717585851 is a deficient number, since it is larger than the sum of its proper divisors (1).

65717585851 is an equidigital number, since it uses as much as digits as its factorization.

65717585851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760000, while the sum is 58.

The spelling of 65717585851 in words is "sixty-five billion, seven hundred seventeen million, five hundred eighty-five thousand, eight hundred fifty-one".