51604510335440 has 40 divisors (see below), whose sum is σ = 126295248982560. Its totient is φ = 19555393389696.

The previous prime is 51604510335349. The next prime is 51604510335463. The reversal of 51604510335440 is 4453301540615.

51604510335440 is digitally balanced in base 2 and base 6, because in such bases 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 (40).

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 7 ways as a sum of consecutive naturals, for example, 16975166354 + ... + 16975169393.

It is an arithmetic number, because the mean of its divisors is an integer number (3157381224564).

Almost surely, 2^{51604510335440} is an apocalyptic number.

It is an amenable number.

51604510335440 is an abundant number, since it is smaller than the sum of its proper divisors (74690738647120).

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

51604510335440 is a wasteful number, since it uses less digits than its factorization.

51604510335440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33950335779 (or 33950335773 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 51604510335440 in words is "fifty-one trillion, six hundred four billion, five hundred ten million, three hundred thirty-five thousand, four hundred forty".