218958213396 has 48 divisors (see below), whose sum is σ = 550238561600. Its totient is φ = 67367365632.

The previous prime is 218958213371. The next prime is 218958213431. The reversal of 218958213396 is 693312859812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3004275 + ... + 3076293.

Almost surely, 2^218958213396 is an apocalyptic number.

218958213396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

218958213396 is an abundant number, since it is smaller than the sum of its proper divisors (331280348204).

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

218958213396 is a wasteful number, since it uses less digits than its factorization.

218958213396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91528 (or 91526 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 57.

The spelling of 218958213396 in words is "two hundred eighteen billion, nine hundred fifty-eight million, two hundred thirteen thousand, three hundred ninety-six".