51423555137 has 2 divisors, whose sum is σ = 51423555138. Its totient is φ = 51423555136.

The previous prime is 51423555103. The next prime is 51423555167. The reversal of 51423555137 is 73155532415.

51423555137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48648478096 + 2775077041 = 220564^2 + 52679^2 .

It is a cyclic number.

It is not a de Polignac number, because 51423555137 - 2¹⁰ = 51423554113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51423555094 and 51423555103.

It is not a weakly prime, because it can be changed into another prime (51423555167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25711777568 + 25711777569.

It is an arithmetic number, because the mean of its divisors is an integer number (25711777569).

Almost surely, 2^51423555137 is an apocalyptic number.

It is an amenable number.

51423555137 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423555137 is an equidigital number, since it uses as much as digits as its factorization.

51423555137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 41.

The spelling of 51423555137 in words is "fifty-one billion, four hundred twenty-three million, five hundred fifty-five thousand, one hundred thirty-seven".