218436105751 has 2 divisors, whose sum is σ = 218436105752. Its totient is φ = 218436105750.

The previous prime is 218436105731. The next prime is 218436105911. The reversal of 218436105751 is 157501634812.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218436105751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218436105698 and 218436105707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218436105731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109218052875 + 109218052876.

It is an arithmetic number, because the mean of its divisors is an integer number (109218052876).

Almost surely, 2^218436105751 is an apocalyptic number.

218436105751 is a deficient number, since it is larger than the sum of its proper divisors (1).

218436105751 is an equidigital number, since it uses as much as digits as its factorization.

218436105751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 218436105751 in words is "two hundred eighteen billion, four hundred thirty-six million, one hundred five thousand, seven hundred fifty-one".