20754834448842 has 48 divisors (see below), whose sum is σ = 49609116510408. Its totient is φ = 6230344296960.

The previous prime is 20754834448841. The next prime is 20754834448847. The reversal of 20754834448842 is 24884443845702.

20754834448842 is a `hidden beast` number, since 2 + 0 + 7 + 548 + 3 + 4 + 4 + 4 + 8 + 84 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12302563265001 + 8452271183841 = 3507501^2 + 2907279^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20754834448842.

It is not an unprimeable number, because it can be changed into a prime (20754834448841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1081647403 + ... + 1081666590.

Almost surely, 2^{20754834448842} is an apocalyptic number.

20754834448842 is an abundant number, since it is smaller than the sum of its proper divisors (28854282061566).

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

20754834448842 is a wasteful number, since it uses less digits than its factorization.

20754834448842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163314055 (or 2163314052 counting only the distinct ones).

The product of its (nonzero) digits is 220200960, while the sum is 63.

The spelling of 20754834448842 in words is "twenty trillion, seven hundred fifty-four billion, eight hundred thirty-four million, four hundred forty-eight thousand, eight hundred forty-two".