65536663556 has 48 divisors (see below), whose sum is σ = 141458518656. Its totient is φ = 25871007744.

The previous prime is 65536663553. The next prime is 65536663573.

65536663556 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (65536663553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22781 + ... + 362756.

It is an arithmetic number, because the mean of its divisors is an integer number (2947052472).

Almost surely, 2^65536663556 is an apocalyptic number.

It is an amenable number.

65536663556 is an abundant number, since it is smaller than the sum of its proper divisors (75921855100).

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

65536663556 is a wasteful number, since it uses less digits than its factorization.

65536663556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386028 (or 386026 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 56.

The spelling of 65536663556 in words is "sixty-five billion, five hundred thirty-six million, six hundred sixty-three thousand, five hundred fifty-six".