20104260742244 has 72 divisors (see below), whose sum is σ = 41106161055960. Its totient is φ = 8578302050304.

The previous prime is 20104260742211. The next prime is 20104260742283. The reversal of 20104260742244 is 44224706240102.

It can be written as a sum of positive squares in 4 ways, for example, as 1081055108644 + 19023205633600 = 1039738^2 + 4361560^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20104260742198 and 20104260742207.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 802328564 + ... + 802353620.

It is an arithmetic number, because the mean of its divisors is an integer number (570918903555).

Almost surely, 2^{20104260742244} 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 20104260742244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20553080527980).

20104260742244 is an abundant number, since it is smaller than the sum of its proper divisors (21001900313716).

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

20104260742244 is a wasteful number, since it uses less digits than its factorization.

20104260742244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42877 (or 42868 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 38.

Adding to 20104260742244 its reverse (44224706240102), we get a palindrome (64328966982346).

The spelling of 20104260742244 in words is "twenty trillion, one hundred four billion, two hundred sixty million, seven hundred forty-two thousand, two hundred forty-four".