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207915712992 = 25321355533043
BaseRepresentation
bin1100000110100010111…
…1100000000111100000
3201212200000002120100200
43001220233200013200
511401302410303432
6235303135145200
721010226254311
oct3015057400740
9655600076320
10207915712992
11801a3aaa569
1234366675200
13167b6260810
14a0c54c8608
15561d370a7c
hex3068be01e0

207915712992 has 72 divisors (see below), whose sum is σ = 636741882504. Its totient is φ = 63974064384.

The previous prime is 207915712987. The next prime is 207915713011. The reversal of 207915712992 is 299217519702.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27762778 + ... + 27770265.

It is an arithmetic number, because the mean of its divisors is an integer number (8843637257).

Almost surely, 2207915712992 is an apocalyptic number.

It is an amenable number.

207915712992 is an abundant number, since it is smaller than the sum of its proper divisors (428826169512).

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

207915712992 is a wasteful number, since it uses less digits than its factorization.

207915712992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55533072 (or 55533061 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 207915712992 in words is "two hundred seven billion, nine hundred fifteen million, seven hundred twelve thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 72 78 96 104 117 144 156 208 234 288 312 416 468 624 936 1248 1872 3744 55533043 111066086 166599129 222132172 333198258 444264344 499797387 666396516 721929559 888528688 999594774 1332793032 1443859118 1777057376 1999189548 2165788677 2665586064 2887718236 3998379096 4331577354 5331172128 5775436472 6497366031 7996758192 8663154708 11550872944 12994732062 15993516384 17326309416 23101745888 25989464124 34652618832 51978928248 69305237664 103957856496 207915712992