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12899513913 = 31121323157757
BaseRepresentation
bin11000000001101111…
…01111011000111001
31020021222201012110120
430000313233120321
5202404233421123
65532001203453
7634443026166
oct140067573071
936258635416
1012899513913
11551a491800
122600030589
1312a761ab90
148a528d06d
155077032e3
hex300def639

12899513913 has 96 divisors (see below), whose sum is σ = 21408054528. Its totient is φ = 6849722880.

The previous prime is 12899513903. The next prime is 12899513923. The reversal of 12899513913 is 31931599821.

It is an interprime number because it is at equal distance from previous prime (12899513903) and next prime (12899513923).

It is not a de Polignac number, because 12899513913 - 214 = 12899497529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12899513903) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17039931 + ... + 17040687.

It is an arithmetic number, because the mean of its divisors is an integer number (223000568).

Almost surely, 212899513913 is an apocalyptic number.

12899513913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12899513913 is a deficient number, since it is larger than the sum of its proper divisors (8508540615).

12899513913 is a wasteful number, since it uses less digits than its factorization.

12899513913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 964 counting only the distinct ones).

The product of its digits is 524880, while the sum is 51.

The spelling of 12899513913 in words is "twelve billion, eight hundred ninety-nine million, five hundred thirteen thousand, nine hundred thirteen".

Divisors: 1 3 11 13 23 33 39 69 121 143 157 253 299 363 429 471 757 759 897 1573 1727 2041 2271 2783 3289 3611 4719 5181 6123 8327 8349 9841 9867 10833 17411 18997 22451 24981 29523 36179 39721 46943 52233 56991 67353 91597 108251 108537 118849 119163 140829 191521 226343 246961 274791 324753 356547 436931 516373 574563 679029 740883 1190761 1307339 1310793 1545037 1549119 2106731 2489773 2733527 3572283 3922017 4635111 5680103 6320193 7469319 8200581 14380729 16995407 17040309 27387503 30068797 35535851 43142187 50986221 82162509 90206391 106607553 186949477 330756767 390894361 560848431 992270301 1172683083 4299837971 12899513913