51219827705771 has 2 divisors, whose sum is σ = 51219827705772. Its totient is φ = 51219827705770.

The previous prime is 51219827705591. The next prime is 51219827705779. The reversal of 51219827705771 is 17750772891215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51219827705771 - 2⁴² = 46821781194667 is a prime.

It is not a weakly prime, because it can be changed into another prime (51219827705779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25609913852885 + 25609913852886.

It is an arithmetic number, because the mean of its divisors is an integer number (25609913852886).

Almost surely, 2^{51219827705771} is an apocalyptic number.

51219827705771 is a deficient number, since it is larger than the sum of its proper divisors (1).

51219827705771 is an equidigital number, since it uses as much as digits as its factorization.

51219827705771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17287200, while the sum is 62.

The spelling of 51219827705771 in words is "fifty-one trillion, two hundred nineteen billion, eight hundred twenty-seven million, seven hundred five thousand, seven hundred seventy-one".