20035124505521 has 8 divisors (see below), whose sum is σ = 20384534219040. Its totient is φ = 19688476924512.

The previous prime is 20035124505503. The next prime is 20035124505533. The reversal of 20035124505521 is 12550542153002.

It is a happy number.

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 20035124505521 - 2¹⁴ = 20035124489137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20035121505521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690518495 + ... + 690547508.

It is an arithmetic number, because the mean of its divisors is an integer number (2548066777380).

Almost surely, 2^{20035124505521} is an apocalyptic number.

It is an amenable number.

20035124505521 is a deficient number, since it is larger than the sum of its proper divisors (349409713519).

20035124505521 is a wasteful number, since it uses less digits than its factorization.

20035124505521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381066255.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 20035124505521 its reverse (12550542153002), we get a palindrome (32585666658523).

The spelling of 20035124505521 in words is "twenty trillion, thirty-five billion, one hundred twenty-four million, five hundred five thousand, five hundred twenty-one".