218278155119 has 2 divisors, whose sum is σ = 218278155120. Its totient is φ = 218278155118.

The previous prime is 218278155103. The next prime is 218278155127. The reversal of 218278155119 is 911551872812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218278155119 - 2⁴ = 218278155103 is a prime.

It is a super-2 number, since 2×218278155119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218278175119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109139077559 + 109139077560.

It is an arithmetic number, because the mean of its divisors is an integer number (109139077560).

Almost surely, 2^218278155119 is an apocalyptic number.

218278155119 is a deficient number, since it is larger than the sum of its proper divisors (1).

218278155119 is an equidigital number, since it uses as much as digits as its factorization.

218278155119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 50.

The spelling of 218278155119 in words is "two hundred eighteen billion, two hundred seventy-eight million, one hundred fifty-five thousand, one hundred nineteen".