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13681718113 = 73194348823
BaseRepresentation
bin11001011110111111…
…00111001101100001
31022022111120021220111
430233133213031201
5211010004434423
610141342411321
7663021454000
oct145737471541
938274507814
1013681718113
115890a78358
122799b90b41
1313a06ac9bb
1493b104c37
1555121260d
hex32f7e7361

13681718113 has 32 divisors (see below), whose sum is σ = 17186048000. Its totient is φ = 10851373008.

The previous prime is 13681718111. The next prime is 13681718119. The reversal of 13681718113 is 31181718631.

It is a happy number.

It is not a de Polignac number, because 13681718113 - 21 = 13681718111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13681718111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255820 + ... + 304642.

It is an arithmetic number, because the mean of its divisors is an integer number (537064000).

Almost surely, 213681718113 is an apocalyptic number.

It is an amenable number.

13681718113 is a deficient number, since it is larger than the sum of its proper divisors (3504329887).

13681718113 is an equidigital number, since it uses as much as digits as its factorization.

13681718113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48906 (or 48892 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The spelling of 13681718113 in words is "thirteen billion, six hundred eighty-one million, seven hundred eighteen thousand, one hundred thirteen".

Divisors: 1 7 19 43 49 133 301 343 817 931 2107 5719 6517 14749 40033 48823 280231 341761 927637 2099389 2392327 6493459 14695723 16746289 39888391 45454213 102870061 279218737 318179491 720090427 1954531159 13681718113