20200521133 has 12 divisors (see below), whose sum is σ = 23109357460. Its totient is φ = 17549770752.

The previous prime is 20200521127. The next prime is 20200521149. The reversal of 20200521133 is 33112500202.

It can be written as a sum of positive squares in 6 ways, for example, as 178837129 + 20021684004 = 13373^2 + 141498^2 .

It is not a de Polignac number, because 20200521133 - 2⁹ = 20200520621 is a prime.

It is a super-2 number, since 2×20200521133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200521133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200521433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2684628 + ... + 2692141.

Almost surely, 2^20200521133 is an apocalyptic number.

It is an amenable number.

20200521133 is a deficient number, since it is larger than the sum of its proper divisors (2908836327).

20200521133 is a wasteful number, since it uses less digits than its factorization.

20200521133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5376816 (or 5376799 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The spelling of 20200521133 in words is "twenty billion, two hundred million, five hundred twenty-one thousand, one hundred thirty-three".