51106565566155 has 64 divisors (see below), whose sum is σ = 97004235529728. Its totient is φ = 22691049154560.

The previous prime is 51106565566151. The next prime is 51106565566183. The reversal of 51106565566155 is 55166556560115.

It is not a de Polignac number, because 51106565566155 - 2² = 51106565566151 is a prime.

It is a super-2 number, since 2×51106565566155² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51106565566095 and 51106565566104.

It is not an unprimeable number, because it can be changed into a prime (51106565566151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246109857 + ... + 246317426.

It is an arithmetic number, because the mean of its divisors is an integer number (1515691180152).

Almost surely, 2^{51106565566155} is an apocalyptic number.

51106565566155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51106565566155 is a deficient number, since it is larger than the sum of its proper divisors (45897669963573).

51106565566155 is a wasteful number, since it uses less digits than its factorization.

51106565566155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492427356.

The product of its (nonzero) digits is 20250000, while the sum is 57.

The spelling of 51106565566155 in words is "fifty-one trillion, one hundred six billion, five hundred sixty-five million, five hundred sixty-six thousand, one hundred fifty-five".