51418927249 has 2 divisors, whose sum is σ = 51418927250. Its totient is φ = 51418927248.

The previous prime is 51418927237. The next prime is 51418927271. The reversal of 51418927249 is 94272981415.

51418927249 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., 45867932224 + 5550995025 = 214168^2 + 74505^2 .

It is a cyclic number.

It is not a de Polignac number, because 51418927249 - 2²⁵ = 51385372817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51418927196 and 51418927205.

It is not a weakly prime, because it can be changed into another prime (51418922249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25709463624 + 25709463625.

It is an arithmetic number, because the mean of its divisors is an integer number (25709463625).

Almost surely, 2^51418927249 is an apocalyptic number.

It is an amenable number.

51418927249 is a deficient number, since it is larger than the sum of its proper divisors (1).

51418927249 is an equidigital number, since it uses as much as digits as its factorization.

51418927249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The spelling of 51418927249 in words is "fifty-one billion, four hundred eighteen million, nine hundred twenty-seven thousand, two hundred forty-nine".