51420338521071 has 16 divisors (see below), whose sum is σ = 73834571766144. Its totient is φ = 31643182587744.

The previous prime is 51420338521067. The next prime is 51420338521247. The reversal of 51420338521071 is 17012583302415.

It is a happy number.

51420338521071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51420338521071 - 2² = 51420338521067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51420338521051) 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 15 ways as a sum of consecutive naturals, for example, 11069620 + ... + 15012566.

It is an arithmetic number, because the mean of its divisors is an integer number (4614660735384).

Almost surely, 2^{51420338521071} is an apocalyptic number.

51420338521071 is a deficient number, since it is larger than the sum of its proper divisors (22414233245073).

51420338521071 is a wasteful number, since it uses less digits than its factorization.

51420338521071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277350.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 51420338521071 in words is "fifty-one trillion, four hundred twenty billion, three hundred thirty-eight million, five hundred twenty-one thousand, seventy-one".