206222179551844 has 27 divisors (see below), whose sum is σ = 361231873243801. Its totient is φ = 103013165949200.

The previous prime is 206222179551841. The next prime is 206222179551887. The reversal of 206222179551844 is 448155971222602.

The square root of 206222179551844 is 14360438.

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

It can be written as a sum of positive squares in only one way, i.e., 316899191844 + 205905280360000 = 562938^2 + 14349400^2 .

It is a super-2 number, since 2×206222179551844² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206222179551841) 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, 37365856917 + ... + 37365862435.

Almost surely, 2^{206222179551844} is an apocalyptic number.

206222179551844 is the 14360438-th square number.

It is an amenable number.

206222179551844 is a deficient number, since it is larger than the sum of its proper divisors (155009693691957).

206222179551844 is an frugal number, since it uses more digits than its factorization.

206222179551844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 206222179551844 in words is "two hundred six trillion, two hundred twenty-two billion, one hundred seventy-nine million, five hundred fifty-one thousand, eight hundred forty-four".