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10867871487 = 311531092523
BaseRepresentation
bin10100001111100011…
…01000111011111111
31001001101211001222210
422013301220323333
5134224133341422
64554224111503
7533213245344
oct120761507377
931041731883
1010867871487
1146776a2780
122133765593
1310427450b5
147515187cb
1543919010c
hex287c68eff

10867871487 has 48 divisors (see below), whose sum is σ = 16286272128. Its totient is φ = 6390783360.

The previous prime is 10867871459. The next prime is 10867871489. The reversal of 10867871487 is 78417876801.

It is not a de Polignac number, because 10867871487 - 222 = 10863677183 is a prime.

It is a super-2 number, since 2×108678714872 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10867871489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20779608 + ... + 20780130.

It is an arithmetic number, because the mean of its divisors is an integer number (339297336).

Almost surely, 210867871487 is an apocalyptic number.

10867871487 is a deficient number, since it is larger than the sum of its proper divisors (5418400641).

10867871487 is a wasteful number, since it uses less digits than its factorization.

10867871487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 57.

The spelling of 10867871487 in words is "ten billion, eight hundred sixty-seven million, eight hundred seventy-one thousand, four hundred eighty-seven".

Divisors: 1 3 11 33 53 109 159 327 523 583 1199 1569 1749 3597 5753 5777 11881 17259 17331 27719 35643 57007 63547 83157 130691 171021 190641 304909 392073 627077 629693 914727 1881231 1889079 3021371 6213763 6926623 9064113 18641289 20779869 33235081 68351393 99705243 205054179 329329439 987988317 3622623829 10867871487