51063879169 has 4 divisors (see below), whose sum is σ = 51066683460. Its totient is φ = 51061074880.

The previous prime is 51063879161. The next prime is 51063879193. The reversal of 51063879169 is 96197836015.

It is a happy number.

51063879169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96197836015 = 5 ⋅19239567203.

It can be written as a sum of positive squares in 2 ways, for example, as 43091532225 + 7972346944 = 207585^2 + 89288^2 .

It is a cyclic number.

It is not a de Polignac number, because 51063879169 - 2³ = 51063879161 is a prime.

It is a super-2 number, since 2×51063879169² (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 (51063879161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374652 + ... + 1411309.

It is an arithmetic number, because the mean of its divisors is an integer number (12766670865).

Almost surely, 2^51063879169 is an apocalyptic number.

It is an amenable number.

51063879169 is a deficient number, since it is larger than the sum of its proper divisors (2804291).

51063879169 is a wasteful number, since it uses less digits than its factorization.

51063879169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804290.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 51063879169 in words is "fifty-one billion, sixty-three million, eight hundred seventy-nine thousand, one hundred sixty-nine".