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80075097081 = 32737103333517
BaseRepresentation
bin100101010010011011…
…0010000001111111001
321122200120102101211100
41022210312100033321
52302443211101311
6100441435122013
75533223044350
oct1124466201771
9248616371740
1080075097081
1130a61339691
1213628ba3309
137721869665
143c38b26997
152139da4a56
hex12a4d903f9

80075097081 has 48 divisors (see below), whose sum is σ = 137078566144. Its totient is φ = 44088147072.

The previous prime is 80075097079. The next prime is 80075097107. The reversal of 80075097081 is 18079057008.

It is not a de Polignac number, because 80075097081 - 21 = 80075097079 is a prime.

It is a super-2 number, since 2×800750970812 (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80075097061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73335 + ... + 406851.

Almost surely, 280075097081 is an apocalyptic number.

It is an amenable number.

80075097081 is a deficient number, since it is larger than the sum of its proper divisors (57003469063).

80075097081 is a wasteful number, since it uses less digits than its factorization.

80075097081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333670 (or 333667 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 80075097081 in words is "eighty billion, seventy-five million, ninety-seven thousand, eighty-one".

Divisors: 1 3 7 9 21 37 63 103 111 259 309 333 721 777 927 2163 2331 3811 6489 11433 26677 34299 80031 240093 333517 1000551 2334619 3001653 7003857 12340129 21011571 34352251 37020387 86380903 103056753 111061161 240465757 259142709 309170259 721397271 777428127 1271033287 2164191813 3813099861 8897233009 11439299583 26691699027 80075097081