218273719342855 has 8 divisors (see below), whose sum is σ = 285740141685264. Its totient is φ = 158744523158400.

The previous prime is 218273719342817. The next prime is 218273719342871. The reversal of 218273719342855 is 558243917372812.

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

It is not a de Polignac number, because 218273719342855 - 2⁷ = 218273719342727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984306539426 + ... + 1984306539535.

It is an arithmetic number, because the mean of its divisors is an integer number (35717517710658).

Almost surely, 2^{218273719342855} is an apocalyptic number.

218273719342855 is a deficient number, since it is larger than the sum of its proper divisors (67466422342409).

218273719342855 is a wasteful number, since it uses less digits than its factorization.

218273719342855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968613078977.

The product of its digits is 203212800, while the sum is 67.

The spelling of 218273719342855 in words is "two hundred eighteen trillion, two hundred seventy-three billion, seven hundred nineteen million, three hundred forty-two thousand, eight hundred fifty-five".