51345564260553 has 12 divisors (see below), whose sum is σ = 74168217109428. Its totient is φ = 34229267527680.

The previous prime is 51345564260539. The next prime is 51345564260569. The reversal of 51345564260553 is 35506246554315.

51345564260553 is a `hidden beast` number, since 5 + 1 + 3 + 4 + 5 + 5 + 64 + 26 + 0 + 553 = 666.

51345564260553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29384606453049 + 21960957807504 = 5420757^2 + 4686252^2 .

It is not a de Polignac number, because 51345564260553 - 2⁶ = 51345564260489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51345564260553.

It is not an unprimeable number, because it can be changed into a prime (51345564260503) 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 11 ways as a sum of consecutive naturals, for example, 92093800 + ... + 92649657.

It is an arithmetic number, because the mean of its divisors is an integer number (6180684759119).

Almost surely, 2^{51345564260553} is an apocalyptic number.

It is an amenable number.

51345564260553 is a deficient number, since it is larger than the sum of its proper divisors (22822652848875).

51345564260553 is a wasteful number, since it uses less digits than its factorization.

51345564260553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184774344 (or 184774341 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 54.

The spelling of 51345564260553 in words is "fifty-one trillion, three hundred forty-five billion, five hundred sixty-four million, two hundred sixty thousand, five hundred fifty-three".