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80082988849 = 137358327013
BaseRepresentation
bin100101010010101010…
…0010110111100110001
321122201010021100022001
41022211110112330301
52303002221120344
6100442320214001
75533350113413
oct1124524267461
9248633240261
1080082988849
1130a65839906
121362b76a301
1377233a0746
143c39bbc9b3
15213a912ed4
hex12a5516f31

80082988849 has 4 divisors (see below), whose sum is σ = 80141317236. Its totient is φ = 80024660464.

The previous prime is 80082988847. The next prime is 80082988903. The reversal of 80082988849 is 94888928008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43547342400 + 36535646449 = 208680^2 + 191143^2 .

It is a cyclic number.

It is not a de Polignac number, because 80082988849 - 21 = 80082988847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80082988841) 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, 29162134 + ... + 29164879.

It is an arithmetic number, because the mean of its divisors is an integer number (20035329309).

Almost surely, 280082988849 is an apocalyptic number.

It is an amenable number.

80082988849 is a deficient number, since it is larger than the sum of its proper divisors (58328387).

80082988849 is a wasteful number, since it uses less digits than its factorization.

80082988849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58328386.

The product of its (nonzero) digits is 21233664, while the sum is 64.

The spelling of 80082988849 in words is "eighty billion, eighty-two million, nine hundred eighty-eight thousand, eight hundred forty-nine".

Divisors: 1 1373 58327013 80082988849