218127814738 has 32 divisors (see below), whose sum is σ = 352245801600. Its totient is φ = 100988499456.

The previous prime is 218127814717. The next prime is 218127814739. The reversal of 218127814738 is 837418721812.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (218127814739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323778 + ... + 735586.

It is an arithmetic number, because the mean of its divisors is an integer number (11007681300).

Almost surely, 2^218127814738 is an apocalyptic number.

218127814738 is a deficient number, since it is larger than the sum of its proper divisors (134117986862).

218127814738 is a wasteful number, since it uses less digits than its factorization.

218127814738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412146.

The product of its digits is 1204224, while the sum is 52.

The spelling of 218127814738 in words is "two hundred eighteen billion, one hundred twenty-seven million, eight hundred fourteen thousand, seven hundred thirty-eight".