65501611610556 has 48 divisors (see below), whose sum is σ = 166759727839488. Its totient is φ = 19845597878400.

The previous prime is 65501611610549. The next prime is 65501611610579.

65501611610556 is nontrivially palindromic in base 10.

65501611610556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65501611610556² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41412480 + ... + 42965063.

It is an arithmetic number, because the mean of its divisors is an integer number (3474160996656).

Almost surely, 2^{65501611610556} is an apocalyptic number.

65501611610556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65501611610556 is an abundant number, since it is smaller than the sum of its proper divisors (101258116228932).

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

65501611610556 is a wasteful number, since it uses less digits than its factorization.

65501611610556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84383442 (or 84383440 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 65501611610556 in words is "sixty-five trillion, five hundred one billion, six hundred eleven million, six hundred ten thousand, five hundred fifty-six".