51636444005 has 16 divisors (see below), whose sum is σ = 63413311104. Its totient is φ = 40343029440.

The previous prime is 51636443959. The next prime is 51636444019. The reversal of 51636444005 is 50044463615.

It is not a de Polignac number, because 51636444005 - 2²⁴ = 51619666789 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 51636444005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2450615 + ... + 2471595.

It is an arithmetic number, because the mean of its divisors is an integer number (3963331944).

Almost surely, 2^51636444005 is an apocalyptic number.

It is an amenable number.

51636444005 is a deficient number, since it is larger than the sum of its proper divisors (11776867099).

51636444005 is a wasteful number, since it uses less digits than its factorization.

51636444005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32476.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 51636444005 in words is "fifty-one billion, six hundred thirty-six million, four hundred forty-four thousand, five".