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805030280805 = 3553668685387
BaseRepresentation
bin10111011011011111000…
…10110011111001100101
32211221220221111111000010
423231233202303321211
5101142200222441210
61413454212440433
7112106254324512
oct13555742637145
92757827444003
10805030280805
11290458674163
1211002b019119
135abb617acaa
142ad6c46a309
1515e19c2a920
hexbb6f8b3e65

805030280805 has 8 divisors (see below), whose sum is σ = 1288048449312. Its totient is φ = 429349483088.

The previous prime is 805030280741. The next prime is 805030280819. The reversal of 805030280805 is 508082030508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 805030280805 - 26 = 805030280741 is a prime.

It is a Curzon number.

It is a congruent number.

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, 26834342679 + ... + 26834342708.

It is an arithmetic number, because the mean of its divisors is an integer number (161006056164).

Almost surely, 2805030280805 is an apocalyptic number.

It is an amenable number.

805030280805 is a deficient number, since it is larger than the sum of its proper divisors (483018168507).

805030280805 is a wasteful number, since it uses less digits than its factorization.

805030280805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53668685395.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 805030280805 in words is "eight hundred five billion, thirty million, two hundred eighty thousand, eight hundred five".

Divisors: 1 3 5 15 53668685387 161006056161 268343426935 805030280805