254686308551 has 2 divisors, whose sum is σ = 254686308552. Its totient is φ = 254686308550.

The previous prime is 254686308533. The next prime is 254686308553. The reversal of 254686308551 is 155803686452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254686308551 is a prime.

Together with 254686308553, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 254686308493 and 254686308502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254686308553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127343154275 + 127343154276.

It is an arithmetic number, because the mean of its divisors is an integer number (127343154276).

Almost surely, 2^254686308551 is an apocalyptic number.

254686308551 is a deficient number, since it is larger than the sum of its proper divisors (1).

254686308551 is an equidigital number, since it uses as much as digits as its factorization.

254686308551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912000, while the sum is 53.

The spelling of 254686308551 in words is "two hundred fifty-four billion, six hundred eighty-six million, three hundred eight thousand, five hundred fifty-one".