218543461052 has 24 divisors (see below), whose sum is σ = 437319644160. Its totient is φ = 93611614320.

The previous prime is 218543461049. The next prime is 218543461061. The reversal of 218543461052 is 250164345812.

It is a super-2 number, since 2×218543461052² (a number of 23 digits) contains 22 as substring.

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, 2024324 + ... + 2129547.

It is an arithmetic number, because the mean of its divisors is an integer number (18221651840).

Almost surely, 2^218543461052 is an apocalyptic number.

It is an amenable number.

218543461052 is an abundant number, since it is smaller than the sum of its proper divisors (218776183108).

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

218543461052 is a wasteful number, since it uses less digits than its factorization.

218543461052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155761 (or 4155759 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 218543461052 in words is "two hundred eighteen billion, five hundred forty-three million, four hundred sixty-one thousand, fifty-two".