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12787952793 = 3711194367759
BaseRepresentation
bin10111110100011100…
…01010110010011001
31020000012210022101020
423322032022302121
5202142203442133
65512534113053
7631616543130
oct137216126231
936005708336
1012787952793
115472514230
12258a7ab789
13128a48a095
1489452c917
154eca180b3
hex2fa38ac99

12787952793 has 64 divisors (see below), whose sum is σ = 22897459200. Its totient is φ = 6147005760.

The previous prime is 12787952773. The next prime is 12787952797. The reversal of 12787952793 is 39725978721.

It is not a de Polignac number, because 12787952793 - 213 = 12787944601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12787952797) 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, 154848 + ... + 222606.

It is an arithmetic number, because the mean of its divisors is an integer number (357772800).

Almost surely, 212787952793 is an apocalyptic number.

It is an amenable number.

12787952793 is a deficient number, since it is larger than the sum of its proper divisors (10109506407).

12787952793 is a wasteful number, since it uses less digits than its factorization.

12787952793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67842.

The product of its digits is 13335840, while the sum is 60.

The spelling of 12787952793 in words is "twelve billion, seven hundred eighty-seven million, nine hundred fifty-two thousand, seven hundred ninety-three".

Divisors: 1 3 7 11 19 21 33 43 57 77 129 133 209 231 301 399 473 627 817 903 1419 1463 2451 3311 4389 5719 8987 9933 17157 26961 62909 67759 188727 203277 474313 745349 1287421 1422939 2236047 2913637 3862263 5217443 8740911 9011947 14161631 15652329 20395459 27035841 32050007 42484893 55359103 61186377 96150021 99131417 166077309 224350049 297394251 387513721 608950133 673050147 1162541163 1826850399 4262650931 12787952793