51155612106720 has 96 divisors (see below), whose sum is σ = 175789285257600. Its totient is φ = 12401360509440.

The previous prime is 51155612106689. The next prime is 51155612106811. The reversal of 51155612106720 is 2760121655115.

It is a happy number.

51155612106720 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 (96).

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, 4844276170 + ... + 4844286729.

It is an arithmetic number, because the mean of its divisors is an integer number (1831138388100).

Almost surely, 2^{51155612106720} is an apocalyptic number.

It is an amenable number.

51155612106720 is an abundant number, since it is smaller than the sum of its proper divisors (124633673150880).

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

51155612106720 is a wasteful number, since it uses less digits than its factorization.

51155612106720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9688562928 (or 9688562920 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 51155612106720 in words is "fifty-one trillion, one hundred fifty-five billion, six hundred twelve million, one hundred six thousand, seven hundred twenty".