218737740101 has 2 divisors, whose sum is σ = 218737740102. Its totient is φ = 218737740100.

The previous prime is 218737740083. The next prime is 218737740131. The reversal of 218737740101 is 101047737812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205363048900 + 13374691201 = 453170^2 + 115649^2 .

It is a cyclic number.

It is not a de Polignac number, because 218737740101 - 2¹⁴ = 218737723717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218737740131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109368870050 + 109368870051.

It is an arithmetic number, because the mean of its divisors is an integer number (109368870051).

Almost surely, 2^218737740101 is an apocalyptic number.

It is an amenable number.

218737740101 is a deficient number, since it is larger than the sum of its proper divisors (1).

218737740101 is an equidigital number, since it uses as much as digits as its factorization.

218737740101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 41.

The spelling of 218737740101 in words is "two hundred eighteen billion, seven hundred thirty-seven million, seven hundred forty thousand, one hundred one".