51104545139 has 2 divisors, whose sum is σ = 51104545140. Its totient is φ = 51104545138.

The previous prime is 51104545123. The next prime is 51104545159. The reversal of 51104545139 is 93154540115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51104545139 - 2⁴ = 51104545123 is a prime.

It is a super-3 number, since 3×51104545139³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51104545159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552272569 + 25552272570.

It is an arithmetic number, because the mean of its divisors is an integer number (25552272570).

Almost surely, 2^51104545139 is an apocalyptic number.

51104545139 is a deficient number, since it is larger than the sum of its proper divisors (1).

51104545139 is an equidigital number, since it uses as much as digits as its factorization.

51104545139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 51104545139 in words is "fifty-one billion, one hundred four million, five hundred forty-five thousand, one hundred thirty-nine".