65350638849 has 16 divisors (see below), whose sum is σ = 88142947200. Its totient is φ = 43063042176.

The previous prime is 65350638841. The next prime is 65350638851. The reversal of 65350638849 is 94883605356.

It is a happy number.

It is not a de Polignac number, because 65350638849 - 2³ = 65350638841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65350638841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782347 + ... + 861839.

It is an arithmetic number, because the mean of its divisors is an integer number (5508934200).

Almost surely, 2^65350638849 is an apocalyptic number.

It is an amenable number.

65350638849 is a deficient number, since it is larger than the sum of its proper divisors (22792308351).

65350638849 is a wasteful number, since it uses less digits than its factorization.

65350638849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82664.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 65350638849 in words is "sixty-five billion, three hundred fifty million, six hundred thirty-eight thousand, eight hundred forty-nine".