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80216169020 = 225131336723081
BaseRepresentation
bin100101010110101000…
…0011001101000111100
321200001101212121010222
41022231100121220330
52303240314402040
6100503434520512
75536555120661
oct1125520315074
9250041777128
1080216169020
1131023a33069
1213668296138
137744b60890
143c4d769a68
15214746dbb5
hex12ad419a3c

80216169020 has 48 divisors (see below), whose sum is σ = 181433383488. Its totient is φ = 29614778880.

The previous prime is 80216169013. The next prime is 80216169079. The reversal of 80216169020 is 2096161208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3463880 + ... + 3486960.

It is an arithmetic number, because the mean of its divisors is an integer number (3779862156).

Almost surely, 280216169020 is an apocalyptic number.

It is an amenable number.

80216169020 is an abundant number, since it is smaller than the sum of its proper divisors (101217214468).

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

80216169020 is a wasteful number, since it uses less digits than its factorization.

80216169020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36470 (or 36468 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 80216169020 in words is "eighty billion, two hundred sixteen million, one hundred sixty-nine thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 13367 23081 26734 46162 53468 66835 92324 115405 133670 173771 230810 267340 300053 347542 461620 600106 695084 868855 1200212 1500265 1737710 3000530 3475420 6001060 308523727 617047454 1234094908 1542618635 3085237270 4010808451 6170474540 8021616902 16043233804 20054042255 40108084510 80216169020