218755210542 has 48 divisors (see below), whose sum is σ = 486987352320. Its totient is φ = 65450333520.

The previous prime is 218755210517. The next prime is 218755210543. The reversal of 218755210542 is 245012557812.

It is a junction number, because it is equal to n+sod(n) for n = 218755210494 and 218755210503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218755210543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1849708 + ... + 1964415.

It is an arithmetic number, because the mean of its divisors is an integer number (10145569840).

Almost surely, 2^218755210542 is an apocalyptic number.

218755210542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

218755210542 is an abundant number, since it is smaller than the sum of its proper divisors (268232141778).

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

218755210542 is a wasteful number, since it uses less digits than its factorization.

218755210542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814229 (or 3814218 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 42.

The spelling of 218755210542 in words is "two hundred eighteen billion, seven hundred fifty-five million, two hundred ten thousand, five hundred forty-two".