51011320012 has 12 divisors (see below), whose sum is σ = 92149481536. Its totient is φ = 24682896720.

The previous prime is 51011319991. The next prime is 51011320013. The reversal of 51011320012 is 21002311015.

It is not an unprimeable number, because it can be changed into a prime (51011320013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205690683 + ... + 205690930.

Almost surely, 2^51011320012 is an apocalyptic number.

It is an amenable number.

51011320012 is a deficient number, since it is larger than the sum of its proper divisors (41138161524).

51011320012 is a wasteful number, since it uses less digits than its factorization.

51011320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411381648 (or 411381646 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 51011320012 its reverse (21002311015), we get a palindrome (72013631027).

The spelling of 51011320012 in words is "fifty-one billion, eleven million, three hundred twenty thousand, twelve".