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80469811898 = 278369251129
BaseRepresentation
bin100101011110001011…
…1111110001010111010
321200201002010222202122
41022330113332022322
52304300232440043
6100544535201242
75546055054410
oct1127427761272
9250632128678
1080469811898
1131144124783
1213719216222
13778557a418
143c753132b0
15215e872368
hex12bc5fe2ba

80469811898 has 16 divisors (see below), whose sum is σ = 139610278080. Its totient is φ = 34071554976.

The previous prime is 80469811819. The next prime is 80469811901. The reversal of 80469811898 is 89811896408.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80469811898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34624403 + ... + 34626726.

It is an arithmetic number, because the mean of its divisors is an integer number (8725642380).

Almost surely, 280469811898 is an apocalyptic number.

80469811898 is a deficient number, since it is larger than the sum of its proper divisors (59140466182).

80469811898 is a wasteful number, since it uses less digits than its factorization.

80469811898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69251221.

The product of its (nonzero) digits is 7962624, while the sum is 62.

The spelling of 80469811898 in words is "eighty billion, four hundred sixty-nine million, eight hundred eleven thousand, eight hundred ninety-eight".

Divisors: 1 2 7 14 83 166 581 1162 69251129 138502258 484757903 969515806 5747843707 11495687414 40234905949 80469811898