51103606606553 has 8 divisors (see below), whose sum is σ = 51246093823560. Its totient is φ = 50961301251840.

The previous prime is 51103606606463. The next prime is 51103606606579. The reversal of 51103606606553 is 35560660630115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4921972976704 + 46181633629849 = 2218552^2 + 6795707^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51103606606553 - 2²⁸ = 51103338171097 is a prime.

It is a super-2 number, since 2×51103606606553² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51103606606498 and 51103606606507.

It is not an unprimeable number, because it can be changed into a prime (51103606696553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44902778 + ... + 46026803.

It is an arithmetic number, because the mean of its divisors is an integer number (6405761727945).

Almost surely, 2^{51103606606553} is an apocalyptic number.

It is an amenable number.

51103606606553 is a deficient number, since it is larger than the sum of its proper divisors (142487217007).

51103606606553 is a wasteful number, since it uses less digits than its factorization.

51103606606553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90931147.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 51103606606553 in words is "fifty-one trillion, one hundred three billion, six hundred six million, six hundred six thousand, five hundred fifty-three".