20131433121009 has 16 divisors (see below), whose sum is σ = 30676705280000. Its totient is φ = 11503587658320.

The previous prime is 20131433121001. The next prime is 20131433121011. The reversal of 20131433121009 is 90012133413102.

It is not a de Polignac number, because 20131433121009 - 2³ = 20131433121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131433121001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835057 + ... + 6400014.

It is an arithmetic number, because the mean of its divisors is an integer number (1917294080000).

Almost surely, 2^{20131433121009} is an apocalyptic number.

It is an amenable number.

20131433121009 is a deficient number, since it is larger than the sum of its proper divisors (10545272158991).

20131433121009 is a wasteful number, since it uses less digits than its factorization.

20131433121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367580.

The product of its (nonzero) digits is 3888, while the sum is 30.

The spelling of 20131433121009 in words is "twenty trillion, one hundred thirty-one billion, four hundred thirty-three million, one hundred twenty-one thousand, nine".