51313162173 has 64 divisors (see below), whose sum is σ = 88510205952. Its totient is φ = 25700083200.

The previous prime is 51313162139. The next prime is 51313162213. The reversal of 51313162173 is 37126131315.

It is not a de Polignac number, because 51313162173 - 2¹⁸ = 51312900029 is a prime.

It is a super-2 number, since 2×51313162173² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313162273) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 830398 + ... + 890048.

It is an arithmetic number, because the mean of its divisors is an integer number (1382971968).

Almost surely, 2^51313162173 is an apocalyptic number.

It is an amenable number.

51313162173 is a deficient number, since it is larger than the sum of its proper divisors (37197043779).

51313162173 is a wasteful number, since it uses less digits than its factorization.

51313162173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59834.

The product of its digits is 11340, while the sum is 33.

Adding to 51313162173 its reverse (37126131315), we get a palindrome (88439293488).

The spelling of 51313162173 in words is "fifty-one billion, three hundred thirteen million, one hundred sixty-two thousand, one hundred seventy-three".