218159112551 has 8 divisors (see below), whose sum is σ = 225687922320. Its totient is φ = 210630708288.

The previous prime is 218159112517. The next prime is 218159112557. The reversal of 218159112551 is 155211951812.

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

It is a de Polignac number, because none of the positive numbers 2^k-218159112551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218159112499 and 218159112508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218159112557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1341395 + ... + 1495211.

It is an arithmetic number, because the mean of its divisors is an integer number (28210990290).

Almost surely, 2^218159112551 is an apocalyptic number.

218159112551 is a deficient number, since it is larger than the sum of its proper divisors (7528809769).

218159112551 is a wasteful number, since it uses less digits than its factorization.

218159112551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202753.

The product of its digits is 36000, while the sum is 41.

The spelling of 218159112551 in words is "two hundred eighteen billion, one hundred fifty-nine million, one hundred twelve thousand, five hundred fifty-one".