51906720222179 has 2 divisors, whose sum is σ = 51906720222180. Its totient is φ = 51906720222178.

The previous prime is 51906720222109. The next prime is 51906720222193. The reversal of 51906720222179 is 97122202760915.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51906720222179 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51906720222179.

It is not a weakly prime, because it can be changed into another prime (51906720222109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25953360111089 + 25953360111090.

It is an arithmetic number, because the mean of its divisors is an integer number (25953360111090).

Almost surely, 2^{51906720222179} is an apocalyptic number.

51906720222179 is a deficient number, since it is larger than the sum of its proper divisors (1).

51906720222179 is an equidigital number, since it uses as much as digits as its factorization.

51906720222179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 51906720222179 in words is "fifty-one trillion, nine hundred six billion, seven hundred twenty million, two hundred twenty-two thousand, one hundred seventy-nine".