20006444268 has 36 divisors (see below), whose sum is σ = 50608121200. Its totient is φ = 6664031136.

The previous prime is 20006444243. The next prime is 20006444279. The reversal of 20006444268 is 86244460002.

It is a happy number.

20006444268 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 644 + 4 + 2 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148255 + ... + 248982.

Almost surely, 2^20006444268 is an apocalyptic number.

It is an amenable number.

20006444268 is an abundant number, since it is smaller than the sum of its proper divisors (30601676932).

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

20006444268 is a wasteful number, since it uses less digits than its factorization.

20006444268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398646 (or 398641 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 20006444268 in words is "twenty billion, six million, four hundred forty-four thousand, two hundred sixty-eight".