51325245564365 has 16 divisors (see below), whose sum is σ = 62768061178416. Its totient is φ = 40275406080000.

The previous prime is 51325245564337. The next prime is 51325245564379. The reversal of 51325245564365 is 56346554252315.

It can be written as a sum of positive squares in 8 ways, for example, as 147089124484 + 51178156439881 = 383522^2 + 7153891^2 .

It is not a de Polignac number, because 51325245564365 - 2³² = 51320950597069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51325245564365.

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, 23143706 + ... + 25264235.

It is an arithmetic number, because the mean of its divisors is an integer number (3923003823651).

Almost surely, 2^{51325245564365} is an apocalyptic number.

It is an amenable number.

51325245564365 is a deficient number, since it is larger than the sum of its proper divisors (11442815614051).

51325245564365 is a wasteful number, since it uses less digits than its factorization.

51325245564365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48412000.

The product of its digits is 64800000, while the sum is 56.

The spelling of 51325245564365 in words is "fifty-one trillion, three hundred twenty-five billion, two hundred forty-five million, five hundred sixty-four thousand, three hundred sixty-five".