218681462952 has 48 divisors (see below), whose sum is σ = 592600493940. Its totient is φ = 72852196608.

The previous prime is 218681462869. The next prime is 218681462953. The reversal of 218681462952 is 259264186812.

218681462952 is a `hidden beast` number, since 2 + 1 + 8 + 6 + 8 + 1 + 4 + 629 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 162429956676 + 56251506276 = 403026^2 + 237174^2 .

It is not an unprimeable number, because it can be changed into a prime (218681462953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740083 + ... + 992514.

Almost surely, 2^218681462952 is an apocalyptic number.

It is an amenable number.

218681462952 is an abundant number, since it is smaller than the sum of its proper divisors (373919030988).

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

218681462952 is a wasteful number, since it uses less digits than its factorization.

218681462952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734362 (or 1734355 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 218681462952 in words is "two hundred eighteen billion, six hundred eighty-one million, four hundred sixty-two thousand, nine hundred fifty-two".