51105560005505 has 64 divisors (see below), whose sum is σ = 65441970316800. Its totient is φ = 38243439360000.

The previous prime is 51105560005439. The next prime is 51105560005531. The reversal of 51105560005505 is 50550006550115.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-51105560005505 is a prime.

It is a super-2 number, since 2×51105560005505² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3114095750 + ... + 3114112160.

It is an arithmetic number, because the mean of its divisors is an integer number (1022530786200).

Almost surely, 2^{51105560005505} is an apocalyptic number.

It is an amenable number.

51105560005505 is a deficient number, since it is larger than the sum of its proper divisors (14336410311295).

51105560005505 is a wasteful number, since it uses less digits than its factorization.

51105560005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20106.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 51105560005505 in words is "fifty-one trillion, one hundred five billion, five hundred sixty million, five thousand, five hundred five".