218564373134 has 8 divisors (see below), whose sum is σ = 327852907560. Its totient is φ = 109280070616.

The previous prime is 218564373091. The next prime is 218564373169. The reversal of 218564373134 is 431373465812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925544 + ... + 1137435.

It is an arithmetic number, because the mean of its divisors is an integer number (40981613445).

Almost surely, 2^218564373134 is an apocalyptic number.

218564373134 is a deficient number, since it is larger than the sum of its proper divisors (109288534426).

218564373134 is a wasteful number, since it uses less digits than its factorization.

218564373134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115954.

The product of its digits is 1451520, while the sum is 47.

The spelling of 218564373134 in words is "two hundred eighteen billion, five hundred sixty-four million, three hundred seventy-three thousand, one hundred thirty-four".