20130535133 has 8 divisors (see below), whose sum is σ = 20265560952. Its totient is φ = 19995595776.

The previous prime is 20130535121. The next prime is 20130535147. The reversal of 20130535133 is 33153503102.

It can be written as a sum of positive squares in 4 ways, for example, as 10999394884 + 9131140249 = 104878^2 + 95557^2 .

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 20130535133 - 2¹⁸ = 20130272989 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 (20130534133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485141 + ... + 524997.

It is an arithmetic number, because the mean of its divisors is an integer number (2533195119).

Almost surely, 2^20130535133 is an apocalyptic number.

It is an amenable number.

20130535133 is a deficient number, since it is larger than the sum of its proper divisors (135025819).

20130535133 is a wasteful number, since it uses less digits than its factorization.

20130535133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43231.

The product of its (nonzero) digits is 4050, while the sum is 26.

The spelling of 20130535133 in words is "twenty billion, one hundred thirty million, five hundred thirty-five thousand, one hundred thirty-three".