5351778404251 has 2 divisors, whose sum is σ = 5351778404252. Its totient is φ = 5351778404250.

The previous prime is 5351778404237. The next prime is 5351778404311. The reversal of 5351778404251 is 1524048771535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5351778404251 - 2²¹ = 5351776307099 is a prime.

It is not a weakly prime, because it can be changed into another prime (5351778404051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2675889202125 + 2675889202126.

It is an arithmetic number, because the mean of its divisors is an integer number (2675889202126).

Almost surely, 2^{5351778404251} is an apocalyptic number.

5351778404251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5351778404251 is an equidigital number, since it uses as much as digits as its factorization.

5351778404251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 5351778404251 in words is "five trillion, three hundred fifty-one billion, seven hundred seventy-eight million, four hundred four thousand, two hundred fifty-one".