20020500133 has 4 divisors (see below), whose sum is σ = 20056061088. Its totient is φ = 19984939180.

The previous prime is 20020500131. The next prime is 20020500139. The reversal of 20020500133 is 33100502002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20020500133 - 2¹ = 20020500131 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 (20020500131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17779633 + ... + 17780758.

It is an arithmetic number, because the mean of its divisors is an integer number (5014015272).

Almost surely, 2^20020500133 is an apocalyptic number.

It is an amenable number.

20020500133 is a deficient number, since it is larger than the sum of its proper divisors (35560955).

20020500133 is an equidigital number, since it uses as much as digits as its factorization.

20020500133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35560954.

The product of its (nonzero) digits is 180, while the sum is 16.

The spelling of 20020500133 in words is "twenty billion, twenty million, five hundred thousand, one hundred thirty-three".