20013545336460 has 192 divisors, whose sum is σ = 62877470552064. Its totient is φ = 4722938035200.

The previous prime is 20013545336441. The next prime is 20013545336471. The reversal of 20013545336460 is 6463354531002.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1280451 + ... + 6454970.

It is an arithmetic number, because the mean of its divisors is an integer number (327486825792).

Almost surely, 2^{20013545336460} is an apocalyptic number.

20013545336460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20013545336460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31438735276032).

20013545336460 is an abundant number, since it is smaller than the sum of its proper divisors (42863925215604).

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

20013545336460 is a wasteful number, since it uses less digits than its factorization.

20013545336460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735584 (or 7735582 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 20013545336460 its reverse (6463354531002), we get a palindrome (26476899867462).

The spelling of 20013545336460 in words is "twenty trillion, thirteen billion, five hundred forty-five million, three hundred thirty-six thousand, four hundred sixty".