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13125442235455 = 51129431228115583
BaseRepresentation
bin1011111100000000000101…
…0100100110110000111111
31201110210001122012100100001
42333000001110212300333
53210021401203013310
643525424523015131
72523165460121434
oct277000124466077
951423048170301
1013125442235455
114200517a64970
12157b97006a4a7
1374295450cb44
143353bc069b8b
1517b6522eb93a
hexbf001526c3f

13125442235455 has 64 divisors (see below), whose sum is σ = 18190911467520. Its totient is φ = 9000960998400.

The previous prime is 13125442235449. The next prime is 13125442235459. The reversal of 13125442235455 is 55453224452131.

It is not a de Polignac number, because 13125442235455 - 239 = 12575686421567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125442235459) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 842284594 + ... + 842300176.

It is an arithmetic number, because the mean of its divisors is an integer number (284232991680).

Almost surely, 213125442235455 is an apocalyptic number.

13125442235455 is a deficient number, since it is larger than the sum of its proper divisors (5065469232065).

13125442235455 is a wasteful number, since it uses less digits than its factorization.

13125442235455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27952.

The product of its digits is 2880000, while the sum is 46.

Adding to 13125442235455 its reverse (55453224452131), we get a palindrome (68578666687586).

The spelling of 13125442235455 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty-two million, two hundred thirty-five thousand, four hundred fifty-five".

Divisors: 1 5 11 29 43 55 145 215 319 473 1247 1595 2365 6235 12281 13717 15583 61405 68585 77915 135091 171413 356149 451907 528083 670069 675455 857065 1780745 2259535 2640415 3350345 3917639 4970977 5808913 7370759 15314407 19432001 19588195 24854885 29044565 36853795 76572035 97160005 168458477 191374823 213752011 842292385 956874115 1068760055 2105123053 5549869867 8229117389 10525615265 27749349335 41145586945 61048568537 90520291279 238644404281 305242842685 452601456395 1193222021405 2625088447091 13125442235455