218437723152 has 60 divisors (see below), whose sum is σ = 666896992944. Its totient is φ = 66193248960.

The previous prime is 218437723123. The next prime is 218437723201. The reversal of 218437723152 is 251327734812.

It is a junction number, because it is equal to n+sod(n) for n = 218437723098 and 218437723107.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68949718 + ... + 68952885.

Almost surely, 2^218437723152 is an apocalyptic number.

218437723152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218437723152 is an abundant number, since it is smaller than the sum of its proper divisors (448459269792).

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

218437723152 is a wasteful number, since it uses less digits than its factorization.

218437723152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137902628 (or 137902619 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 218437723152 in words is "two hundred eighteen billion, four hundred thirty-seven million, seven hundred twenty-three thousand, one hundred fifty-two".