65834911943857 has 32 divisors (see below), whose sum is σ = 75582276747264. Its totient is φ = 56173851864000.

The previous prime is 65834911943819. The next prime is 65834911943893. The reversal of 65834911943857 is 75834911943856.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65834911943857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65834911943857.

It is not an unprimeable number, because it can be changed into a prime (65834911943897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2906478982 + ... + 2906501632.

It is an arithmetic number, because the mean of its divisors is an integer number (2361946148352).

Almost surely, 2^{65834911943857} is an apocalyptic number.

It is an amenable number.

65834911943857 is a deficient number, since it is larger than the sum of its proper divisors (9747364803407).

65834911943857 is a wasteful number, since it uses less digits than its factorization.

65834911943857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25189.

The product of its digits is 783820800, while the sum is 73.

Subtracting 65834911943857 from its reverse (75834911943856), we obtain a palindrome (9999999999999).

The spelling of 65834911943857 in words is "sixty-five trillion, eight hundred thirty-four billion, nine hundred eleven million, nine hundred forty-three thousand, eight hundred fifty-seven".