51204140505255 has 32 divisors (see below), whose sum is σ = 87790968647424. Its totient is φ = 25392802198016.

The previous prime is 51204140505229. The next prime is 51204140505257. The reversal of 51204140505255 is 55250504140215.

It is a happy number.

51204140505255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51204140505255 - 2¹¹ = 51204140503207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204140505257) 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 31 ways as a sum of consecutive naturals, for example, 1209620709 + ... + 1209663038.

It is an arithmetic number, because the mean of its divisors is an integer number (2743467770232).

Almost surely, 2^{51204140505255} is an apocalyptic number.

51204140505255 is a deficient number, since it is larger than the sum of its proper divisors (36586828142169).

51204140505255 is a wasteful number, since it uses less digits than its factorization.

51204140505255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419283855.

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 51204140505255 in words is "fifty-one trillion, two hundred four billion, one hundred forty million, five hundred five thousand, two hundred fifty-five".