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87207940953 = 3372675711723
BaseRepresentation
bin101000100110111111…
…1111001001101011001
322100002200010102011000
41101031333321031121
52412100213102303
6104021320455213
76205044160500
oct1211577711531
9270080112130
1087207940953
1133a91677881
1214a9991a509
1382ba545633
144314183837
1524061aeda3
hex144dff9359

87207940953 has 96 divisors (see below), whose sum is σ = 152889285120. Its totient is φ = 48974919840.

The previous prime is 87207940921. The next prime is 87207940969. The reversal of 87207940953 is 35904970278.

It is not a de Polignac number, because 87207940953 - 25 = 87207940921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87207940953.

It is not an unprimeable number, because it can be changed into a prime (87207940903) 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, 50613150 + ... + 50614872.

It is an arithmetic number, because the mean of its divisors is an integer number (1592596720).

Almost surely, 287207940953 is an apocalyptic number.

It is an amenable number.

87207940953 is a deficient number, since it is larger than the sum of its proper divisors (65681344167).

87207940953 is a wasteful number, since it uses less digits than its factorization.

87207940953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 87207940953 in words is "eighty-seven billion, two hundred seven million, nine hundred forty thousand, nine hundred fifty-three".

Divisors: 1 3 7 9 21 27 49 63 67 147 189 201 441 469 571 603 1323 1407 1713 1723 1809 3283 3997 4221 5139 5169 9849 11991 12061 12663 15417 15507 27979 29547 35973 36183 38257 46521 83937 84427 88641 107919 108549 114771 115441 251811 253281 267799 325647 344313 346323 755433 759843 803397 808087 983833 1032939 1038969 1874593 2279529 2410191 2424261 2951499 3116907 5623779 5656609 6886831 7230573 7272783 8854497 16871337 16969827 20660493 21818349 26563491 48207817 50614011 50909481 61981479 65916811 144623451 152728443 185944437 197750433 433870353 461417677 593251299 1301611059 1384253031 1779753897 3229923739 4152759093 9689771217 12458277279 29069313651 87207940953