51918526229 has 2 divisors, whose sum is σ = 51918526230. Its totient is φ = 51918526228.

The previous prime is 51918526223. The next prime is 51918526271. The reversal of 51918526229 is 92262581915.

It is a happy number.

51918526229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51812230129 + 106296100 = 227623^2 + 10310^2 .

It is a cyclic number.

It is not a de Polignac number, because 51918526229 - 2¹² = 51918522133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51918526223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25959263114 + 25959263115.

It is an arithmetic number, because the mean of its divisors is an integer number (25959263115).

Almost surely, 2^51918526229 is an apocalyptic number.

It is an amenable number.

51918526229 is a deficient number, since it is larger than the sum of its proper divisors (1).

51918526229 is an equidigital number, since it uses as much as digits as its factorization.

51918526229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 50.

The spelling of 51918526229 in words is "fifty-one billion, nine hundred eighteen million, five hundred twenty-six thousand, two hundred twenty-nine".