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13201352568 = 2333254923977
BaseRepresentation
bin11000100101101110…
…01010011101111000
31021002000200012021000
430102313022131320
5204014021240233
610021542445000
7645066434235
oct142267123570
937060605230
1013201352568
115664901638
122685133760
131325010831
148d33c078c
15523e76d13
hex312dca778

13201352568 has 64 divisors (see below), whose sum is σ = 36686340000. Its totient is φ = 4398541056.

The previous prime is 13201352509. The next prime is 13201352617. The reversal of 13201352568 is 86525310231.

13201352568 is a `hidden beast` number, since 1 + 32 + 0 + 13 + 52 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 538596 + ... + 562572.

Almost surely, 213201352568 is an apocalyptic number.

13201352568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13201352568 is an abundant number, since it is smaller than the sum of its proper divisors (23484987432).

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

13201352568 is a wasteful number, since it uses less digits than its factorization.

13201352568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26541 (or 26531 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 13201352568 its reverse (86525310231), we get a palindrome (99726662799).

The spelling of 13201352568 in words is "thirteen billion, two hundred one million, three hundred fifty-two thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 2549 5098 7647 10196 15294 20392 22941 23977 30588 45882 47954 61176 68823 71931 91764 95908 137646 143862 183528 191816 215793 275292 287724 431586 550584 575448 647379 863172 1294758 1726344 2589516 5179032 61117373 122234746 183352119 244469492 366704238 488938984 550056357 733408476 1100112714 1466816952 1650169071 2200225428 3300338142 4400450856 6600676284 13201352568