65799543516 has 24 divisors (see below), whose sum is σ = 175465449600. Its totient is φ = 18799869552.

The previous prime is 65799543401. The next prime is 65799543521. The reversal of 65799543516 is 61534599756.

It is a self number, because there is not a number n which added to its sum of digits gives 65799543516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391663866 + ... + 391664033.

It is an arithmetic number, because the mean of its divisors is an integer number (7311060400).

Almost surely, 2^65799543516 is an apocalyptic number.

It is an amenable number.

65799543516 is an abundant number, since it is smaller than the sum of its proper divisors (109665906084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65799543516 is a wasteful number, since it uses less digits than its factorization.

65799543516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783327913 (or 783327911 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 60.

The spelling of 65799543516 in words is "sixty-five billion, seven hundred ninety-nine million, five hundred forty-three thousand, five hundred sixteen".