20006661226 has 8 divisors (see below), whose sum is σ = 30021210180. Its totient is φ = 9999591168.

The previous prime is 20006661217. The next prime is 20006661253. The reversal of 20006661226 is 62216660002.

It can be written as a sum of positive squares in 2 ways, for example, as 19571730201 + 434931025 = 139899^2 + 20855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863031 + ... + 1873738.

Almost surely, 2^20006661226 is an apocalyptic number.

20006661226 is a deficient number, since it is larger than the sum of its proper divisors (10014548954).

20006661226 is a wasteful number, since it uses less digits than its factorization.

20006661226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739448.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 20006661226 in words is "twenty billion, six million, six hundred sixty-one thousand, two hundred twenty-six".