51651161105 has 8 divisors (see below), whose sum is σ = 62100362664. Its totient is φ = 41241616000.

The previous prime is 51651161101. The next prime is 51651161119. The reversal of 51651161105 is 50116115615.

It can be written as a sum of positive squares in 4 ways, for example, as 7241499409 + 44409661696 = 85097^2 + 210736^2 .

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

It is not a de Polignac number, because 51651161105 - 2² = 51651161101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51651161101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9911246 + ... + 9916455.

It is an arithmetic number, because the mean of its divisors is an integer number (7762545333).

Almost surely, 2^51651161105 is an apocalyptic number.

It is an amenable number.

51651161105 is a deficient number, since it is larger than the sum of its proper divisors (10449201559).

51651161105 is a wasteful number, since it uses less digits than its factorization.

51651161105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19828227.

The product of its (nonzero) digits is 4500, while the sum is 32.

It can be divided in two parts, 51 and 651161105, that added together give a palindrome (651161156).

The spelling of 51651161105 in words is "fifty-one billion, six hundred fifty-one million, one hundred sixty-one thousand, one hundred five".