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13122345023420 = 2252961370897259
BaseRepresentation
bin1011111011110100100010…
…1101101011011110111100
31201110111001210020200011012
42332331020231223132330
53204444030311222140
643524153323014352
72523025641214643
oct276751055533674
951414053220135
1013122345023420
1141aa1787376a6
12157b24696a3b8
1374257c94cab9
143351a699a35a
1517b520454265
hexbef48b6b7bc

13122345023420 has 48 divisors (see below), whose sum is σ = 28974493951200. Its totient is φ = 4984859147520.

The previous prime is 13122345023351. The next prime is 13122345023443. The reversal of 13122345023420 is 2432054322131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185413250 + ... + 185484009.

It is an arithmetic number, because the mean of its divisors is an integer number (603635290650).

Almost surely, 213122345023420 is an apocalyptic number.

13122345023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122345023420 is an abundant number, since it is smaller than the sum of its proper divisors (15852148927780).

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

13122345023420 is a wasteful number, since it uses less digits than its factorization.

13122345023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370897358 (or 370897356 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 13122345023420 its reverse (2432054322131), we get a palindrome (15554399345551).

The spelling of 13122345023420 in words is "thirteen trillion, one hundred twenty-two billion, three hundred forty-five million, twenty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 61 116 122 145 244 290 305 580 610 1220 1769 3538 7076 8845 17690 35380 370897259 741794518 1483589036 1854486295 3708972590 7417945180 10756020511 21512041022 22624732799 43024082044 45249465598 53780102555 90498931196 107560205110 113123663995 215120410220 226247327990 452494655980 656117251171 1312234502342 2624469004684 3280586255855 6561172511710 13122345023420