51316530605 has 16 divisors (see below), whose sum is σ = 63617908224. Its totient is φ = 39696661440.

The previous prime is 51316530581. The next prime is 51316530673. The reversal of 51316530605 is 50603561315.

It is a happy number.

It is not a de Polignac number, because 51316530605 - 2¹⁰ = 51316529581 is a prime.

It is a Duffinian number.

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, 57914 + ... + 325556.

It is an arithmetic number, because the mean of its divisors is an integer number (3976119264).

Almost surely, 2^51316530605 is an apocalyptic number.

It is an amenable number.

51316530605 is a deficient number, since it is larger than the sum of its proper divisors (12301377619).

51316530605 is a wasteful number, since it uses less digits than its factorization.

51316530605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268916.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 51316530605 in words is "fifty-one billion, three hundred sixteen million, five hundred thirty thousand, six hundred five".