20520426514452 has 24 divisors (see below), whose sum is σ = 48692537493600. Its totient is φ = 6724207558176.

The previous prime is 20520426514433. The next prime is 20520426514459. The reversal of 20520426514452 is 25441562402502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20520426514459) 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, 14491825927 + ... + 14491827342.

It is an arithmetic number, because the mean of its divisors is an integer number (2028855728900).

Almost surely, 2^{20520426514452} is an apocalyptic number.

It is an amenable number.

20520426514452 is an abundant number, since it is smaller than the sum of its proper divisors (28172110979148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20520426514452 is a wasteful number, since it uses less digits than its factorization.

20520426514452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28983653335 (or 28983653333 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 20520426514452 its reverse (25441562402502), we get a palindrome (45961988916954).

The spelling of 20520426514452 in words is "twenty trillion, five hundred twenty billion, four hundred twenty-six million, five hundred fourteen thousand, four hundred fifty-two".