51336515042 has 4 divisors (see below), whose sum is σ = 77004772566. Its totient is φ = 25668257520.

The previous prime is 51336515033. The next prime is 51336515099. The reversal of 51336515042 is 24051563315.

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

It can be written as a sum of positive squares in only one way, i.e., 44689537201 + 6646977841 = 211399^2 + 81529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51336514993 and 51336515011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12834128759 + ... + 12834128762.

Almost surely, 2^51336515042 is an apocalyptic number.

51336515042 is a deficient number, since it is larger than the sum of its proper divisors (25668257524).

51336515042 is a wasteful number, since it uses less digits than its factorization.

51336515042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25668257523.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 51336515042 in words is "fifty-one billion, three hundred thirty-six million, five hundred fifteen thousand, forty-two".