65638483656 has 64 divisors (see below), whose sum is σ = 164711707200. Its totient is φ = 21797529600.

The previous prime is 65638483649. The next prime is 65638483663.

It is a happy number.

65638483656 is nontrivially palindromic in base 10.

65638483656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65638483649) and next prime (65638483663).

It is a self number, because there is not a number n which added to its sum of digits gives 65638483656.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16910836 + ... + 16914716.

It is an arithmetic number, because the mean of its divisors is an integer number (2573620425).

Almost surely, 2^65638483656 is an apocalyptic number.

It is an amenable number.

65638483656 is an abundant number, since it is smaller than the sum of its proper divisors (99073223544).

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

65638483656 is a wasteful number, since it uses less digits than its factorization.

65638483656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350 (or 6346 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 60.

The spelling of 65638483656 in words is "sixty-five billion, six hundred thirty-eight million, four hundred eighty-three thousand, six hundred fifty-six".