218249878983468 has 48 divisors (see below), whose sum is σ = 536053533966720. Its totient is φ = 68920860178944.

The previous prime is 218249878983467. The next prime is 218249878983469. The reversal of 218249878983468 is 864389878942812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (218249878983467) and next prime (218249878983469).

It is not an unprimeable number, because it can be changed into a prime (218249878983467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144072796 + ... + 145579772.

It is an arithmetic number, because the mean of its divisors is an integer number (11167781957640).

Almost surely, 2^{218249878983468} is an apocalyptic number.

It is an amenable number.

218249878983468 is an abundant number, since it is smaller than the sum of its proper divisors (317803654983252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218249878983468 is a wasteful number, since it uses less digits than its factorization.

218249878983468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142206 (or 2142204 counting only the distinct ones).

The product of its digits is 21403533312, while the sum is 87.

The spelling of 218249878983468 in words is "two hundred eighteen trillion, two hundred forty-nine billion, eight hundred seventy-eight million, nine hundred eighty-three thousand, four hundred sixty-eight".