51311611326 has 32 divisors (see below), whose sum is σ = 108728098848. Its totient is φ = 16087654400.

The previous prime is 51311611313. The next prime is 51311611327. The reversal of 51311611326 is 62311611315.

It is a junction number, because it is equal to n+sod(n) for n = 51311611293 and 51311611302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51311611327) 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, 6196 + ... + 320408.

It is an arithmetic number, because the mean of its divisors is an integer number (3397753089).

Almost surely, 2^51311611326 is an apocalyptic number.

51311611326 is an abundant number, since it is smaller than the sum of its proper divisors (57416487522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51311611326 is a wasteful number, since it uses less digits than its factorization.

51311611326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315836.

The product of its digits is 3240, while the sum is 30.

The spelling of 51311611326 in words is "fifty-one billion, three hundred eleven million, six hundred eleven thousand, three hundred twenty-six".