51410576720681 has 4 divisors (see below), whose sum is σ = 51410924291412. Its totient is φ = 51410229149952.

The previous prime is 51410576720593. The next prime is 51410576720693. The reversal of 51410576720681 is 18602767501415.

51410576720681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14818965910681 + 36591610810000 = 3849541^2 + 6049100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51410576720681 is a prime.

It is a super-2 number, since 2×51410576720681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51410576750681) 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 3 ways as a sum of consecutive naturals, for example, 173563400 + ... + 173859353.

It is an arithmetic number, because the mean of its divisors is an integer number (12852731072853).

Almost surely, 2^{51410576720681} is an apocalyptic number.

It is an amenable number.

51410576720681 is a deficient number, since it is larger than the sum of its proper divisors (347570731).

51410576720681 is a wasteful number, since it uses less digits than its factorization.

51410576720681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347570730.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The spelling of 51410576720681 in words is "fifty-one trillion, four hundred ten billion, five hundred seventy-six million, seven hundred twenty thousand, six hundred eighty-one".