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80122186780 = 2254006109339
BaseRepresentation
bin100101010011110100…
…1111000110000011100
321122210212000210202021
41022213221320300130
52303042234434110
6100450240305524
75534334231166
oct1124751706034
9248725023667
1080122186780
1130a85981899
12136409122a4
13772b54619c
143c410a3936
15213e0a72da
hex12a7a78c1c

80122186780 has 12 divisors (see below), whose sum is σ = 168256592280. Its totient is φ = 32048874704.

The previous prime is 80122186747. The next prime is 80122186789. The reversal of 80122186780 is 8768122108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80122186789) 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, 2003054650 + ... + 2003054689.

It is an arithmetic number, because the mean of its divisors is an integer number (14021382690).

Almost surely, 280122186780 is an apocalyptic number.

It is an amenable number.

80122186780 is an abundant number, since it is smaller than the sum of its proper divisors (88134405500).

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

80122186780 is a wasteful number, since it uses less digits than its factorization.

80122186780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006109348 (or 4006109346 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 43.

The spelling of 80122186780 in words is "eighty billion, one hundred twenty-two million, one hundred eighty-six thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 4006109339 8012218678 16024437356 20030546695 40061093390 80122186780