2009138855272 has 32 divisors (see below), whose sum is σ = 3795509400480. Its totient is φ = 997031304000.

The previous prime is 2009138855267. The next prime is 2009138855281. The reversal of 2009138855272 is 2725588319002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199523 + ... + 2336050.

It is an arithmetic number, because the mean of its divisors is an integer number (118609668765).

Almost surely, 2^{2009138855272} is an apocalyptic number.

It is an amenable number.

2009138855272 is a deficient number, since it is larger than the sum of its proper divisors (1786370545208).

2009138855272 is a wasteful number, since it uses less digits than its factorization.

2009138855272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536113 (or 3536109 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 2009138855272 in words is "two trillion, nine billion, one hundred thirty-eight million, eight hundred fifty-five thousand, two hundred seventy-two".