51374403708281 has 16 divisors (see below), whose sum is σ = 54162998922240. Its totient is φ = 48632659735440.

The previous prime is 51374403708263. The next prime is 51374403708311. The reversal of 51374403708281 is 18280730447315.

It is a cyclic number.

It is not a de Polignac number, because 51374403708281 - 2¹⁰ = 51374403707257 is a prime.

It is a super-2 number, since 2×51374403708281² (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 (51374403758281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3180311 + ... + 10623708.

It is an arithmetic number, because the mean of its divisors is an integer number (3385187432640).

Almost surely, 2^{51374403708281} is an apocalyptic number.

It is an amenable number.

51374403708281 is a deficient number, since it is larger than the sum of its proper divisors (2788595213959).

51374403708281 is a wasteful number, since it uses less digits than its factorization.

51374403708281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13805716.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 51374403708281 in words is "fifty-one trillion, three hundred seventy-four billion, four hundred three million, seven hundred eight thousand, two hundred eighty-one".