20523135003 has 16 divisors (see below), whose sum is σ = 32282167296. Its totient is φ = 11349198720.

The previous prime is 20523134963. The next prime is 20523135011. The reversal of 20523135003 is 30053132502.

It is a happy number.

It is not a de Polignac number, because 20523135003 - 2⁸ = 20523134747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20523135203) 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, 15762126 + ... + 15763427.

It is an arithmetic number, because the mean of its divisors is an integer number (2017635456).

Almost surely, 2^20523135003 is an apocalyptic number.

20523135003 is a deficient number, since it is larger than the sum of its proper divisors (11759032293).

20523135003 is a wasteful number, since it uses less digits than its factorization.

20523135003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31525594.

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 20523135003 its reverse (30053132502), we get a palindrome (50576267505).

The spelling of 20523135003 in words is "twenty billion, five hundred twenty-three million, one hundred thirty-five thousand, three".