51105610505 has 16 divisors (see below), whose sum is σ = 64159167744. Its totient is φ = 39038632320.

The previous prime is 51105610421. The next prime is 51105610519. The reversal of 51105610505 is 50501650115.

It is a happy number.

51105610505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51105610505 - 2⁸ = 51105610249 is a prime.

It is a super-2 number, since 2×51105610505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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, 2642447 + ... + 2661716.

It is an arithmetic number, because the mean of its divisors is an integer number (4009947984).

Almost surely, 2^51105610505 is an apocalyptic number.

It is an amenable number.

51105610505 is a deficient number, since it is larger than the sum of its proper divisors (13053557239).

51105610505 is a wasteful number, since it uses less digits than its factorization.

51105610505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304256.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 51105610505 in words is "fifty-one billion, one hundred five million, six hundred ten thousand, five hundred five".