51284926173 has 16 divisors (see below), whose sum is σ = 73736703936. Its totient is φ = 31518464640.

The previous prime is 51284926169. The next prime is 51284926193. The reversal of 51284926173 is 37162948215.

It is not a de Polignac number, because 51284926173 - 2² = 51284926169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51284926193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834315 + ... + 893672.

It is an arithmetic number, because the mean of its divisors is an integer number (4608543996).

Almost surely, 2^51284926173 is an apocalyptic number.

It is an amenable number.

51284926173 is a deficient number, since it is larger than the sum of its proper divisors (22451777763).

51284926173 is a wasteful number, since it uses less digits than its factorization.

51284926173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728764.

The product of its digits is 725760, while the sum is 48.

The spelling of 51284926173 in words is "fifty-one billion, two hundred eighty-four million, nine hundred twenty-six thousand, one hundred seventy-three".