65235519616 has 32 divisors (see below), whose sum is σ = 129973141980. Its totient is φ = 32614809600.

The previous prime is 65235519611. The next prime is 65235519637. The reversal of 65235519616 is 61691553256.

It can be written as a sum of positive squares in 2 ways, for example, as 57044545600 + 8190974016 = 238840^2 + 90504^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 65235519616.

It is not an unprimeable number, because it can be changed into a prime (65235519611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341480 + ... + 2369176.

Almost surely, 2^65235519616 is an apocalyptic number.

It is an amenable number.

65235519616 is a deficient number, since it is larger than the sum of its proper divisors (64737622364).

65235519616 is a wasteful number, since it uses less digits than its factorization.

65235519616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46112 (or 46100 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 49.

The spelling of 65235519616 in words is "sixty-five billion, two hundred thirty-five million, five hundred nineteen thousand, six hundred sixteen".