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69887742319242 = 23211813547926867
BaseRepresentation
bin11111110010000000000100…
…00011100001101010001010
3100011110012110220222201122200
433321000002003201222022
533130020044013203432
6404345552515501030
720502136256055651
oct1771000203415212
9304405426881580
1069887742319242
11202a525262a051
127a088675b7776
132ccc502861033
1413388288ac198
15812e195daa7c
hex3f90020e1a8a

69887742319242 has 48 divisors (see below), whose sum is σ = 151594548255072. Its totient is φ = 23269601198880.

The previous prime is 69887742319207. The next prime is 69887742319259. The reversal of 69887742319242 is 24291324778896.

It is a happy number.

69887742319242 is a `hidden beast` number, since 6 + 9 + 8 + 8 + 7 + 7 + 423 + 192 + 4 + 2 = 666.

69887742319242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74938693 + ... + 75865559.

It is an arithmetic number, because the mean of its divisors is an integer number (3158219755314).

Almost surely, 269887742319242 is an apocalyptic number.

69887742319242 is an abundant number, since it is smaller than the sum of its proper divisors (81706805935830).

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

69887742319242 is a wasteful number, since it uses less digits than its factorization.

69887742319242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931603 (or 931600 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 72.

The spelling of 69887742319242 in words is "sixty-nine trillion, eight hundred eighty-seven billion, seven hundred forty-two million, three hundred nineteen thousand, two hundred forty-two".

Divisors: 1 2 3 6 9 18 1181 2362 3543 3547 7086 7094 10629 10641 21258 21282 31923 63846 926867 1853734 2780601 4189007 5561202 8341803 8378014 12567021 16683606 25134042 37701063 75402126 1094629927 2189259854 3283889781 3287597249 6567779562 6575194498 9851669343 9862791747 19703338686 19725583494 29588375241 59176750482 3882652351069 7765304702138 11647957053207 23295914106414 34943871159621 69887742319242