218537674475952 has 80 divisors (see below), whose sum is σ = 608265409959648. Its totient is φ = 67211129026560.

The previous prime is 218537674475951. The next prime is 218537674475977. The reversal of 218537674475952 is 259574476735812.

It is not an unprimeable number, because it can be changed into a prime (218537674475951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79989699 + ... + 82676642.

Almost surely, 2^{218537674475952} is an apocalyptic number.

It is an amenable number.

218537674475952 is an abundant number, since it is smaller than the sum of its proper divisors (389727735483696).

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

218537674475952 is a wasteful number, since it uses less digits than its factorization.

218537674475952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162668518 (or 162668512 counting only the distinct ones).

The product of its digits is 3556224000, while the sum is 75.

The spelling of 218537674475952 in words is "two hundred eighteen trillion, five hundred thirty-seven billion, six hundred seventy-four million, four hundred seventy-five thousand, nine hundred fifty-two".