51636161606 has 8 divisors (see below), whose sum is σ = 77455794240. Its totient is φ = 25817563528.

The previous prime is 51636161597. The next prime is 51636161609. The reversal of 51636161606 is 60616163615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51636161609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118721 + ... + 342588.

It is an arithmetic number, because the mean of its divisors is an integer number (9681974280).

Almost surely, 2^51636161606 is an apocalyptic number.

51636161606 is a deficient number, since it is larger than the sum of its proper divisors (25819632634).

51636161606 is a wasteful number, since it uses less digits than its factorization.

51636161606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517278.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 51636161606 in words is "fifty-one billion, six hundred thirty-six million, one hundred sixty-one thousand, six hundred six".