51551156155155 has 16 divisors (see below), whose sum is σ = 83525923898880. Its totient is φ = 27145925265888.

The previous prime is 51551156155153. The next prime is 51551156155181. The reversal of 51551156155155 is 55155165115515.

51551156155155 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 51551156155155 - 2¹ = 51551156155153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51551156155098 and 51551156155107.

It is not an unprimeable number, because it can be changed into a prime (51551156155153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21751541497 + ... + 21751543866.

It is an arithmetic number, because the mean of its divisors is an integer number (5220370243680).

Almost surely, 2^{51551156155155} is an apocalyptic number.

51551156155155 is a deficient number, since it is larger than the sum of its proper divisors (31974767743725).

51551156155155 is a wasteful number, since it uses less digits than its factorization.

51551156155155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43503085450.

The product of its digits is 2343750, while the sum is 51.

The spelling of 51551156155155 in words is "fifty-one trillion, five hundred fifty-one billion, one hundred fifty-six million, one hundred fifty-five thousand, one hundred fifty-five".