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79923322880 = 21351951253
BaseRepresentation
bin100101001101111001…
…1010010000000000000
321122021222211110202122
41022123303102000000
52302140332313010
6100414414103412
75526401015102
oct1123363220000
9248258743678
1079923322880
11309936a5465
12135a61aab68
1376c929903b
143c228d9572
15212b8c4855
hex129bcd2000

79923322880 has 56 divisors (see below), whose sum is σ = 191804365692. Its totient is φ = 31969312768.

The previous prime is 79923322877. The next prime is 79923322889. The reversal of 79923322880 is 8822332997.

It can be written as a sum of positive squares in 2 ways, for example, as 77899042816 + 2024280064 = 279104^2 + 44992^2 .

It is not an unprimeable number, because it can be changed into a prime (79923322889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934667 + ... + 1016586.

Almost surely, 279923322880 is an apocalyptic number.

It is an amenable number.

79923322880 is an abundant number, since it is smaller than the sum of its proper divisors (111881042812).

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

79923322880 is an equidigital number, since it uses as much as digits as its factorization.

79923322880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951284 (or 1951260 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 79923322880 in words is "seventy-nine billion, nine hundred twenty-three million, three hundred twenty-two thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2048 2560 4096 5120 8192 10240 20480 40960 1951253 3902506 7805012 9756265 15610024 19512530 31220048 39025060 62440096 78050120 124880192 156100240 249760384 312200480 499520768 624400960 999041536 1248801920 1998083072 2497603840 3996166144 4995207680 7992332288 9990415360 15984664576 19980830720 39961661440 79923322880