51135105544 has 16 divisors (see below), whose sum is σ = 95953305600. Its totient is φ = 25547557392.

The previous prime is 51135105521. The next prime is 51135105569. The reversal of 51135105544 is 44550153115.

It is a super-2 number, since 2×51135105544² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2488552 + ... + 2509015.

It is an arithmetic number, because the mean of its divisors is an integer number (5997081600).

Almost surely, 2^51135105544 is an apocalyptic number.

It is an amenable number.

51135105544 is a deficient number, since it is larger than the sum of its proper divisors (44818200056).

51135105544 is a wasteful number, since it uses less digits than its factorization.

51135105544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4998852 (or 4998848 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 51135105544 its reverse (44550153115), we get a palindrome (95685258659).

The spelling of 51135105544 in words is "fifty-one billion, one hundred thirty-five million, one hundred five thousand, five hundred forty-four".