51550110610605 has 24 divisors (see below), whose sum is σ = 89355557917080. Its totient is φ = 27492766830720.

The previous prime is 51550110610601. The next prime is 51550110610619. The reversal of 51550110610605 is 50601601105515.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2573935713801 + 48976174896804 = 1604349^2 + 6998298^2 .

It is not a de Polignac number, because 51550110610605 - 2² = 51550110610601 is a prime.

It is a super-2 number, since 2×51550110610605² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51550110610605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550110610601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11027826 + ... + 14990435.

It is an arithmetic number, because the mean of its divisors is an integer number (3723148246545).

Almost surely, 2^{51550110610605} is an apocalyptic number.

It is an amenable number.

51550110610605 is a deficient number, since it is larger than the sum of its proper divisors (37805447306475).

51550110610605 is a wasteful number, since it uses less digits than its factorization.

51550110610605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26062301 (or 26062298 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 51550110610605 in words is "fifty-one trillion, five hundred fifty billion, one hundred ten million, six hundred ten thousand, six hundred five".