218130332023696 has 45 divisors (see below), whose sum is σ = 437706848565363. Its totient is φ = 105303471141120.

The previous prime is 218130332023663. The next prime is 218130332023697. The reversal of 218130332023696 is 696320233031812.

The square root of 218130332023696 is 14769236.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 71105976894096 + 147024355129600 = 8432436^2 + 12125360^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218130332023697) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1713167716 + ... + 1713295036.

Almost surely, 2^{218130332023696} is an apocalyptic number.

218130332023696 is the 14769236-th square number.

It is an amenable number.

218130332023696 is an abundant number, since it is smaller than the sum of its proper divisors (219576516541667).

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

218130332023696 is an frugal number, since it uses more digits than its factorization.

218130332023696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254708 (or 127352 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 218130332023696 in words is "two hundred eighteen trillion, one hundred thirty billion, three hundred thirty-two million, twenty-three thousand, six hundred ninety-six".