20454849090468 has 144 divisors (see below), whose sum is σ = 57493324761600. Its totient is φ = 6089241070080.

The previous prime is 20454849090463. The next prime is 20454849090491. The reversal of 20454849090468 is 86409094845402.

20454849090468 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 4 + 84 + 9 + 0 + 90 + 468 = 666.

It is not an unprimeable number, because it can be changed into a prime (20454849090463) 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 47 ways as a sum of consecutive naturals, for example, 58132248 + ... + 58483056.

Almost surely, 2^{20454849090468} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20454849090468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28746662380800).

20454849090468 is an abundant number, since it is smaller than the sum of its proper divisors (37038475671132).

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

20454849090468 is a wasteful number, since it uses less digits than its factorization.

20454849090468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354882 (or 354877 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 20454849090468 in words is "twenty trillion, four hundred fifty-four billion, eight hundred forty-nine million, ninety thousand, four hundred sixty-eight".