20120521032433 has 4 divisors (see below), whose sum is σ = 20195318508660. Its totient is φ = 20045723556208.

The previous prime is 20120521032431. The next prime is 20120521032473. The reversal of 20120521032433 is 33423012502102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1586058134544 + 18534462897889 = 1259388^2 + 4305167^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120521032433 - 2¹ = 20120521032431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120521032431) 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, 37398737710 + ... + 37398738247.

It is an arithmetic number, because the mean of its divisors is an integer number (5048829627165).

Almost surely, 2^{20120521032433} is an apocalyptic number.

It is an amenable number.

20120521032433 is a deficient number, since it is larger than the sum of its proper divisors (74797476227).

20120521032433 is an equidigital number, since it uses as much as digits as its factorization.

20120521032433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74797476226.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20120521032433 its reverse (33423012502102), we get a palindrome (53543533534535).

The spelling of 20120521032433 in words is "twenty trillion, one hundred twenty billion, five hundred twenty-one million, thirty-two thousand, four hundred thirty-three".