65005694849 has 2 divisors, whose sum is σ = 65005694850. Its totient is φ = 65005694848.

The previous prime is 65005694839. The next prime is 65005694933. The reversal of 65005694849 is 94849650056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37393890625 + 27611804224 = 193375^2 + 166168^2 .

It is a cyclic number.

It is not a de Polignac number, because 65005694849 - 2¹² = 65005690753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65005694794 and 65005694803.

It is not a weakly prime, because it can be changed into another prime (65005694839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32502847424 + 32502847425.

It is an arithmetic number, because the mean of its divisors is an integer number (32502847425).

Almost surely, 2^65005694849 is an apocalyptic number.

It is an amenable number.

65005694849 is a deficient number, since it is larger than the sum of its proper divisors (1).

65005694849 is an equidigital number, since it uses as much as digits as its factorization.

65005694849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 65005694849 in words is "sixty-five billion, five million, six hundred ninety-four thousand, eight hundred forty-nine".