20450154360042 has 160 divisors (see below), whose sum is σ = 50537607303744. Its totient is φ = 6129170208000.

The previous prime is 20450154360023. The next prime is 20450154360043. The reversal of 20450154360042 is 24006345105402.

20450154360042 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 0 + 1 + 5 + 4 + 3 + 600 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20450154359979 and 20450154360006.

It is not an unprimeable number, because it can be changed into a prime (20450154360043) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 171463233 + ... + 171582459.

Almost surely, 2^{20450154360042} is an apocalyptic number.

20450154360042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20450154360042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25268803651872).

20450154360042 is an abundant number, since it is smaller than the sum of its proper divisors (30087452943702).

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

20450154360042 is a wasteful number, since it uses less digits than its factorization.

20450154360042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120306 (or 120297 counting only the distinct ones).

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

Adding to 20450154360042 its reverse (24006345105402), we get a palindrome (44456499465444).

The spelling of 20450154360042 in words is "twenty trillion, four hundred fifty billion, one hundred fifty-four million, three hundred sixty thousand, forty-two".