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80755217740 = 2254399197633
BaseRepresentation
bin100101100110101100…
…0101101010101001100
321201102222012002222101
41023031120231111030
52310341313431430
6101033132324444
75556122011411
oct1131530552514
9251388162871
1080755217740
113128024037a
1213798913724
1377cc738512
143ca11a8108
15217994bdca
hex12cd62d54c

80755217740 has 24 divisors (see below), whose sum is σ = 169972276320. Its totient is φ = 32228502528.

The previous prime is 80755217689. The next prime is 80755217779. The reversal of 80755217740 is 4771255708.

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, 4590037 + ... + 4607596.

It is an arithmetic number, because the mean of its divisors is an integer number (7082178180).

Almost surely, 280755217740 is an apocalyptic number.

It is an amenable number.

80755217740 is an abundant number, since it is smaller than the sum of its proper divisors (89217058580).

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

80755217740 is a wasteful number, since it uses less digits than its factorization.

80755217740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198081 (or 9198079 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 46.

The spelling of 80755217740 in words is "eighty billion, seven hundred fifty-five million, two hundred seventeen thousand, seven hundred forty".

Divisors: 1 2 4 5 10 20 439 878 1756 2195 4390 8780 9197633 18395266 36790532 45988165 91976330 183952660 4037760887 8075521774 16151043548 20188804435 40377608870 80755217740