51651110066560 has 32 divisors (see below), whose sum is σ = 123478435004400. Its totient is φ = 20660444026368.

The previous prime is 51651110066513. The next prime is 51651110066561. The reversal of 51651110066560 is 6566001115615.

51651110066560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×51651110066560² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51651110066561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40352429100 + ... + 40352430379.

Almost surely, 2^{51651110066560} is an apocalyptic number.

It is an amenable number.

51651110066560 is an abundant number, since it is smaller than the sum of its proper divisors (71827324937840).

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

51651110066560 is an equidigital number, since it uses as much as digits as its factorization.

51651110066560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80704859498 (or 80704859486 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 51651110066560 in words is "fifty-one trillion, six hundred fifty-one billion, one hundred ten million, sixty-six thousand, five hundred sixty".