218968205742 has 80 divisors (see below), whose sum is σ = 576429183792. Its totient is φ = 61249841280.

The previous prime is 218968205741. The next prime is 218968205749. The reversal of 218968205742 is 247502869812.

218968205742 is a `hidden beast` number, since 2 + 1 + 8 + 9 + 68 + 2 + 0 + 574 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218968205741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4702903 + ... + 4749234.

Almost surely, 2^218968205742 is an apocalyptic number.

218968205742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

218968205742 is an abundant number, since it is smaller than the sum of its proper divisors (357460978050).

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

218968205742 is a wasteful number, since it uses less digits than its factorization.

218968205742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9452175 (or 9452166 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 218968205742 in words is "two hundred eighteen billion, nine hundred sixty-eight million, two hundred five thousand, seven hundred forty-two".