20034453241521 has 8 divisors (see below), whose sum is σ = 29680671468960. Its totient is φ = 13356302160996.

The previous prime is 20034453241471. The next prime is 20034453241567. The reversal of 20034453241521 is 12514235443002.

It is a happy number.

20034453241521 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 44 + 53 + 2 + 41 + 521 = 666.

It is not a de Polignac number, because 20034453241521 - 2¹⁷ = 20034453110449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20034453241571) 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, 371008393335 + ... + 371008393388.

It is an arithmetic number, because the mean of its divisors is an integer number (3710083933620).

Almost surely, 2^{20034453241521} is an apocalyptic number.

It is an amenable number.

20034453241521 is a deficient number, since it is larger than the sum of its proper divisors (9646218227439).

20034453241521 is an equidigital number, since it uses as much as digits as its factorization.

20034453241521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742016786732 (or 742016786726 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 20034453241521 its reverse (12514235443002), we get a palindrome (32548688684523).

The spelling of 20034453241521 in words is "twenty trillion, thirty-four billion, four hundred fifty-three million, two hundred forty-one thousand, five hundred twenty-one".