51424452136 has 16 divisors (see below), whose sum is σ = 96423917940. Its totient is φ = 25711407360.

The previous prime is 51424452061. The next prime is 51424452139. The reversal of 51424452136 is 63125442415.

It can be written as a sum of positive squares in 2 ways, for example, as 43593264100 + 7831188036 = 208790^2 + 88494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51424452095 and 51424452104.

It is not an unprimeable number, because it can be changed into a prime (51424452139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226926 + ... + 392866.

Almost surely, 2^51424452136 is an apocalyptic number.

It is an amenable number.

51424452136 is a deficient number, since it is larger than the sum of its proper divisors (44999465804).

51424452136 is a wasteful number, since it uses less digits than its factorization.

51424452136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204684 (or 204680 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The spelling of 51424452136 in words is "fifty-one billion, four hundred twenty-four million, four hundred fifty-two thousand, one hundred thirty-six".