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80207064621 = 3329794792707
BaseRepresentation
bin100101010110010110…
…1101010111000101101
321200000202202001021000
41022230231222320231
52303231002031441
6100502511430513
75536414541355
oct1125455527055
9250022661230
1080207064621
1131019884872
1213665225439
137742cc3868
143c4c479b65
1521467712b6
hex12acb6ae2d

80207064621 has 64 divisors (see below), whose sum is σ = 124784640000. Its totient is φ = 50848814016.

The previous prime is 80207064593. The next prime is 80207064631. The reversal of 80207064621 is 12646070208.

80207064621 is a `hidden beast` number, since 8 + 0 + 2 + 0 + 7 + 0 + 646 + 2 + 1 = 666.

It is not a de Polignac number, because 80207064621 - 217 = 80206933549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80207064631) 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, 29628150 + ... + 29630856.

It is an arithmetic number, because the mean of its divisors is an integer number (1949760000).

Almost surely, 280207064621 is an apocalyptic number.

It is an amenable number.

80207064621 is a deficient number, since it is larger than the sum of its proper divisors (44577575379).

80207064621 is a wasteful number, since it uses less digits than its factorization.

80207064621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303 (or 3297 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 80207064621 in words is "eighty billion, two hundred seven million, sixty-four thousand, six hundred twenty-one".

Divisors: 1 3 9 27 29 79 87 237 261 479 711 783 1437 2133 2291 2707 4311 6873 8121 12933 13891 20619 24363 37841 41673 61857 73089 78503 113523 125019 213853 235509 340569 375057 641559 706527 1021707 1097389 1296653 1924677 2119581 3292167 3889959 5774031 6201737 9876501 11669877 18605211 29629503 35009631 37602937 55815633 102435587 112808811 167446899 307306761 338426433 921920283 1015279299 2765760849 2970632023 8911896069 26735688207 80207064621