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80693933178 = 2319782982351
BaseRepresentation
bin100101100100110111…
…0111011010001111010
321201021200212112100210
41023021232323101322
52310230121330203
6101023103011550
75554446054255
oct1131156732172
9251250775323
1080693933178
1131249692381
1213780299bb6
1377bcb2b971
143c96db409c
152174393803
hex12c9bbb47a

80693933178 has 32 divisors (see below), whose sum is σ = 162404732160. Its totient is φ = 26728833600.

The previous prime is 80693933137. The next prime is 80693933179. The reversal of 80693933178 is 87133939608.

It is not an unprimeable number, because it can be changed into a prime (80693933179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938703 + ... + 1021053.

It is an arithmetic number, because the mean of its divisors is an integer number (5075147880).

Almost surely, 280693933178 is an apocalyptic number.

80693933178 is an abundant number, since it is smaller than the sum of its proper divisors (81710798982).

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

80693933178 is a wasteful number, since it uses less digits than its factorization.

80693933178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83382.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 80693933178 in words is "eighty billion, six hundred ninety-three million, nine hundred thirty-three thousand, one hundred seventy-eight".

Divisors: 1 2 3 6 197 394 591 829 1182 1658 2487 4974 82351 163313 164702 247053 326626 489939 494106 979878 16223147 32446294 48669441 68268979 97338882 136537958 204806937 409613874 13448988863 26897977726 40346966589 80693933178