20533450242 has 16 divisors (see below), whose sum is σ = 41105619072. Its totient is φ = 6838030320.

The previous prime is 20533450213. The next prime is 20533450339. The reversal of 20533450242 is 24205433502.

It is a super-3 number, since 3×20533450242³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606378 + ... + 1619109.

It is an arithmetic number, because the mean of its divisors is an integer number (2569101192).

Almost surely, 2^20533450242 is an apocalyptic number.

20533450242 is an abundant number, since it is smaller than the sum of its proper divisors (20572168830).

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

20533450242 is a wasteful number, since it uses less digits than its factorization.

20533450242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226553.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20533450242 its reverse (24205433502), we get a palindrome (44738883744).

The spelling of 20533450242 in words is "twenty billion, five hundred thirty-three million, four hundred fifty thousand, two hundred forty-two".