20533245454 has 8 divisors (see below), whose sum is σ = 30801082248. Its totient is φ = 10266218040.

The previous prime is 20533245449. The next prime is 20533245457. The reversal of 20533245454 is 45454233502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×20533245454³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533245457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134352 + ... + 243139.

It is an arithmetic number, because the mean of its divisors is an integer number (3850135281).

Almost surely, 2^20533245454 is an apocalyptic number.

20533245454 is a deficient number, since it is larger than the sum of its proper divisors (10267836794).

20533245454 is a wasteful number, since it uses less digits than its factorization.

20533245454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404690.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 20533245454 its reverse (45454233502), we get a palindrome (65987478956).

The spelling of 20533245454 in words is "twenty billion, five hundred thirty-three million, two hundred forty-five thousand, four hundred fifty-four".