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20839873235041 = 726521532
BaseRepresentation
bin1001011110100001010010…
…01111011100100001100001
32201210021100121010110022101
410233100221033130201201
510212420030022010131
6112153412224210401
74250426325516400
oct457205117344141
981707317113271
1020839873235041
116705160168443
122406aa7469a01
13b82264c8a7c3
14520925dd3637
1526215d96ec61
hex12f4293dc861

20839873235041 has 9 divisors (see below), whose sum is σ = 24242338691091. Its totient is φ = 17862721096752.

The previous prime is 20839873235017. The next prime is 20839873235101. The reversal of 20839873235041 is 14053237893802.

The square root of 20839873235041 is 4565071.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14278611477025 + 6561261758016 = 3778705^2 + 2561496^2 .

It is not a de Polignac number, because 20839873235041 - 211 = 20839873232993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20839873233041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31629421 + ... + 32281573.

It is an arithmetic number, because the mean of its divisors is an integer number (2693593187899).

Almost surely, 220839873235041 is an apocalyptic number.

20839873235041 is the 4565071-st square number.

20839873235041 is the 2282536-th centered octagonal number.

It is an amenable number.

20839873235041 is a deficient number, since it is larger than the sum of its proper divisors (3402465456050).

20839873235041 is an frugal number, since it uses more digits than its factorization.

20839873235041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304320 (or 652160 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 20839873235041 in words is "twenty trillion, eight hundred thirty-nine billion, eight hundred seventy-three million, two hundred thirty-five thousand, forty-one".

Divisors: 1 7 49 652153 4565071 31955497 425303535409 2977124747863 20839873235041