51340255502605 has 16 divisors (see below), whose sum is σ = 65237515933680. Its totient is φ = 38653116055552.

The previous prime is 51340255502603. The next prime is 51340255502671. The reversal of 51340255502605 is 50620555204315.

It can be written as a sum of positive squares in 8 ways, for example, as 4828755738249 + 46511499764356 = 2197443^2 + 6819934^2 .

It is a cyclic number.

It is not a de Polignac number, because 51340255502605 - 2¹ = 51340255502603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340255502603) 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, 22959124 + ... + 25095853.

It is an arithmetic number, because the mean of its divisors is an integer number (4077344745855).

Almost surely, 2^{51340255502605} is an apocalyptic number.

It is an amenable number.

51340255502605 is a deficient number, since it is larger than the sum of its proper divisors (13897260431075).

51340255502605 is a wasteful number, since it uses less digits than its factorization.

51340255502605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48067568.

The product of its (nonzero) digits is 900000, while the sum is 43.

The spelling of 51340255502605 in words is "fifty-one trillion, three hundred forty billion, two hundred fifty-five million, five hundred two thousand, six hundred five".