20001013133 has 8 divisors (see below), whose sum is σ = 20203612056. Its totient is φ = 19798504000.

The previous prime is 20001013117. The next prime is 20001013183. The reversal of 20001013133 is 33131010002.

It can be written as a sum of positive squares in 4 ways, for example, as 11154105769 + 8846907364 = 105613^2 + 94058^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20001013133 - 2⁴ = 20001013117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001013183) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 482363 + ... + 522183.

It is an arithmetic number, because the mean of its divisors is an integer number (2525451507).

Almost surely, 2^20001013133 is an apocalyptic number.

It is an amenable number.

20001013133 is a deficient number, since it is larger than the sum of its proper divisors (202598923).

20001013133 is a wasteful number, since it uses less digits than its factorization.

20001013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20001013133 its reverse (33131010002), we get a palindrome (53132023135).

The spelling of 20001013133 in words is "twenty billion, one million, thirteen thousand, one hundred thirty-three".