51205053213126 has 32 divisors (see below), whose sum is σ = 114424699939200. Its totient is φ = 16972997151240.

The previous prime is 51205053213059. The next prime is 51205053213157. The reversal of 51205053213126 is 62131235050215.

51205053213126 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 505 + 3 + 21 + 3 + 126 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648710240 + ... + 2648729571.

It is an arithmetic number, because the mean of its divisors is an integer number (3575771873100).

Almost surely, 2^{51205053213126} is an apocalyptic number.

51205053213126 is an abundant number, since it is smaller than the sum of its proper divisors (63219646726074).

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

51205053213126 is a wasteful number, since it uses less digits than its factorization.

51205053213126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5297440001 (or 5297439995 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 51205053213126 in words is "fifty-one trillion, two hundred five billion, fifty-three million, two hundred thirteen thousand, one hundred twenty-six".