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80805309054 = 2313467551509
BaseRepresentation
bin100101101000001011…
…1110010101001111110
321201120110110000100020
41023100113302221332
52310442124342204
6101042122113010
75560300536261
oct1132027625176
9251513400306
1080805309054
11312a6543758
12137b164b766
137809c26352
143ca7ac6cd8
15217e043bd9
hex12d05f2a7e

80805309054 has 8 divisors (see below), whose sum is σ = 161610618120. Its totient is φ = 26935103016.

The previous prime is 80805309049. The next prime is 80805309059. The reversal of 80805309054 is 45090350808.

It is an interprime number because it is at equal distance from previous prime (80805309049) and next prime (80805309059).

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

80805309054 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 80805308997 and 80805309015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80805309059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6733775749 + ... + 6733775760.

It is an arithmetic number, because the mean of its divisors is an integer number (20201327265).

Almost surely, 280805309054 is an apocalyptic number.

80805309054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80805309054 is a wasteful number, since it uses less digits than its factorization.

80805309054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13467551514.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 80805309054 in words is "eighty billion, eight hundred five million, three hundred nine thousand, fifty-four".

Divisors: 1 2 3 6 13467551509 26935103018 40402654527 80805309054