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13145918156 = 227331309083
BaseRepresentation
bin11000011111000111…
…01100101011001100
31020221011100211112122
430033203230223030
5203410323340111
610012242352112
7643524314000
oct141743545314
936834324478
1013145918156
115636589978
12266a65b638
1313166a19c7
148c9cb0700
1551e176cdb
hex30f8ecacc

13145918156 has 48 divisors (see below), whose sum is σ = 27693926400. Its totient is φ = 5452206480.

The previous prime is 13145918129. The next prime is 13145918221. The reversal of 13145918156 is 65181954131.

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, 112010 + ... + 197073.

It is an arithmetic number, because the mean of its divisors is an integer number (576956800).

Almost surely, 213145918156 is an apocalyptic number.

It is an amenable number.

13145918156 is an abundant number, since it is smaller than the sum of its proper divisors (14548008244).

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

13145918156 is a wasteful number, since it uses less digits than its factorization.

13145918156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309139 (or 309123 counting only the distinct ones).

The product of its digits is 129600, while the sum is 44.

The spelling of 13145918156 in words is "thirteen billion, one hundred forty-five million, nine hundred eighteen thousand, one hundred fifty-six".

Divisors: 1 2 4 7 14 28 31 49 62 98 124 196 217 343 434 686 868 1372 1519 3038 6076 10633 21266 42532 309083 618166 1236332 2163581 4327162 8654324 9581573 15145067 19163146 30290134 38326292 60580268 67071011 106015469 134142022 212030938 268284044 424061876 469497077 938994154 1877988308 3286479539 6572959078 13145918156