218273719342854 has 32 divisors (see below), whose sum is σ = 498916607258880. Its totient is φ = 62363263717152.

The previous prime is 218273719342817. The next prime is 218273719342871. The reversal of 218273719342854 is 458243917372812.

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, 23290489 + ... + 31288884.

It is an arithmetic number, because the mean of its divisors is an integer number (15591143976840).

Almost surely, 2^{218273719342854} is an apocalyptic number.

218273719342854 is an abundant number, since it is smaller than the sum of its proper divisors (280642887916026).

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

218273719342854 is a wasteful number, since it uses less digits than its factorization.

218273719342854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54674604.

The product of its digits is 162570240, while the sum is 66.

The spelling of 218273719342854 in words is "two hundred eighteen trillion, two hundred seventy-three billion, seven hundred nineteen million, three hundred forty-two thousand, eight hundred fifty-four".