20453324224542 has 16 divisors (see below), whose sum is σ = 44625434671872. Its totient is φ = 6197977037720.

The previous prime is 20453324224537. The next prime is 20453324224589. The reversal of 20453324224542 is 24542242335402.

It is a junction number, because it is equal to n+sod(n) for n = 20453324224494 and 20453324224503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154949425878 + ... + 154949426009.

It is an arithmetic number, because the mean of its divisors is an integer number (2789089666992).

Almost surely, 2^{20453324224542} is an apocalyptic number.

20453324224542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20453324224542 is an abundant number, since it is smaller than the sum of its proper divisors (24172110447330).

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

20453324224542 is a wasteful number, since it uses less digits than its factorization.

20453324224542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309898851903.

The product of its (nonzero) digits is 1843200, while the sum is 42.

Adding to 20453324224542 its reverse (24542242335402), we get a palindrome (44995566559944).

The spelling of 20453324224542 in words is "twenty trillion, four hundred fifty-three billion, three hundred twenty-four million, two hundred twenty-four thousand, five hundred forty-two".