51612225123 has 4 divisors (see below), whose sum is σ = 68816300168. Its totient is φ = 34408150080.

The previous prime is 51612225121. The next prime is 51612225149. The reversal of 51612225123 is 32152221615.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51612225123 - 2¹ = 51612225121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51612225121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8602037518 + ... + 8602037523.

It is an arithmetic number, because the mean of its divisors is an integer number (17204075042).

Almost surely, 2^51612225123 is an apocalyptic number.

51612225123 is a deficient number, since it is larger than the sum of its proper divisors (17204075045).

51612225123 is a wasteful number, since it uses less digits than its factorization.

51612225123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17204075044.

The product of its digits is 7200, while the sum is 30.

Adding to 51612225123 its reverse (32152221615), we get a palindrome (83764446738).

The spelling of 51612225123 in words is "fifty-one billion, six hundred twelve million, two hundred twenty-five thousand, one hundred twenty-three".