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13487001385 = 5111343449977
BaseRepresentation
bin11001000111110001…
…10100111100101001
31021210221011122202211
430203320310330221
5210110133021020
610110145125121
7655135422514
oct144370647451
937727148684
1013487001385
1157a1073840
1227449297a1
13136c2553c0
1491d2d9d7b
1553e09d85a
hex323e34f29

13487001385 has 64 divisors (see below), whose sum is σ = 19519315200. Its totient is φ = 8814919680.

The previous prime is 13487001371. The next prime is 13487001389. The reversal of 13487001385 is 58310078431.

It is not a de Polignac number, because 13487001385 - 29 = 13487000873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13487001389) 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, 13804017 + ... + 13804993.

It is an arithmetic number, because the mean of its divisors is an integer number (304989300).

Almost surely, 213487001385 is an apocalyptic number.

It is an amenable number.

13487001385 is a deficient number, since it is larger than the sum of its proper divisors (6032313815).

13487001385 is a wasteful number, since it uses less digits than its factorization.

13487001385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 13487001385 in words is "thirteen billion, four hundred eighty-seven million, one thousand, three hundred eighty-five".

Divisors: 1 5 11 13 43 55 65 143 215 449 473 559 715 977 2245 2365 2795 4885 4939 5837 6149 10747 12701 19307 24695 29185 30745 42011 53735 63505 64207 96535 139711 210055 212377 250991 321035 438673 462121 546143 698555 1061885 1254955 2193365 2310605 2730715 2760901 4825403 5702749 6007573 13804505 18862939 24127015 28513745 30037865 62730239 94314695 207492329 245218207 313651195 1037461645 1226091035 2697400277 13487001385