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371940657842 = 213174122219241
BaseRepresentation
bin1010110100110010110…
…01000000101010110010
31022120001011222002201002
411122121121000222302
522043213302022332
6442511151042002
735605015266515
oct5323131005262
91276034862632
10371940657842
11133814894326
1260102210302
13290c6343bc0
14140057a6d7c
159a1d35e562
hex5699640ab2

371940657842 has 64 divisors (see below), whose sum is σ = 652050308448. Its totient is φ = 157538304000.

The previous prime is 371940657841. The next prime is 371940657857. The reversal of 371940657842 is 248756049173.

It can be written as a sum of positive squares in 16 ways, for example, as 83873372881 + 288067284961 = 289609^2 + 536719^2 .

It is not an unprimeable number, because it can be changed into a prime (371940657841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40244342 + ... + 40253582.

It is a 1-persistent number, because it is pandigital, but 2⋅371940657842 = 743881315684 is not.

Almost surely, 2371940657842 is an apocalyptic number.

371940657842 is a deficient number, since it is larger than the sum of its proper divisors (280109650606).

371940657842 is a wasteful number, since it uses less digits than its factorization.

371940657842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11535.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 371940657842 in words is "three hundred seventy-one billion, nine hundred forty million, six hundred fifty-seven thousand, eight hundred forty-two".

Divisors: 1 2 13 17 26 34 41 82 221 442 533 697 1066 1394 2221 4442 9061 9241 18122 18482 28873 37757 57746 75514 91061 120133 157097 182122 240266 314194 378881 490841 757762 981682 1183793 1548037 2042261 2367586 3096074 4084522 4925453 6440977 9850906 12881954 20124481 20524261 40248962 41048522 83732701 167465402 266815393 348912437 533630786 697824874 841494701 1682989402 4535861681 9071723362 10939431113 14305409917 21878862226 28610819834 185970328921 371940657842