51111166163 has 8 divisors (see below), whose sum is σ = 53829567120. Its totient is φ = 48395599200.

The previous prime is 51111166159. The next prime is 51111166193. The reversal of 51111166163 is 36166111115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51111166163 - 2² = 51111166159 is a prime.

It is a super-2 number, since 2×51111166163² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51111166103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 671420 + ... + 743657.

It is an arithmetic number, because the mean of its divisors is an integer number (6728695890).

Almost surely, 2^51111166163 is an apocalyptic number.

51111166163 is a deficient number, since it is larger than the sum of its proper divisors (2718400957).

51111166163 is a wasteful number, since it uses less digits than its factorization.

51111166163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416997.

The product of its digits is 3240, while the sum is 32.

Adding to 51111166163 its reverse (36166111115), we get a palindrome (87277277278).

The spelling of 51111166163 in words is "fifty-one billion, one hundred eleven million, one hundred sixty-six thousand, one hundred sixty-three".