218939588414 has 4 divisors (see below), whose sum is σ = 328409382624. Its totient is φ = 109469794206.

The previous prime is 218939588381. The next prime is 218939588431. The reversal of 218939588414 is 414885939812.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54734897102 + ... + 54734897105.

It is an arithmetic number, because the mean of its divisors is an integer number (82102345656).

Almost surely, 2^218939588414 is an apocalyptic number.

218939588414 is a deficient number, since it is larger than the sum of its proper divisors (109469794210).

218939588414 is a wasteful number, since it uses less digits than its factorization.

218939588414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109469794209.

The product of its digits is 19906560, while the sum is 62.

The spelling of 218939588414 in words is "two hundred eighteen billion, nine hundred thirty-nine million, five hundred eighty-eight thousand, four hundred fourteen".