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80980012920 = 23355647119503
BaseRepresentation
bin100101101101011001…
…0001110111101111000
321202000122011212222210
41023122302032331320
52311321340403140
6101111322415120
75564521516062
oct1133262167570
9252018155883
1080980012920
1131386119314
12138400614a0
137837194711
143cc2da2732
15218e552d80
hex12dac8ef78

80980012920 has 64 divisors (see below), whose sum is σ = 242985093120. Its totient is φ = 21590665344.

The previous prime is 80980012913. The next prime is 80980013003. The reversal of 80980012920 is 2921008908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617889 + ... + 737391.

It is an arithmetic number, because the mean of its divisors is an integer number (3796642080).

Almost surely, 280980012920 is an apocalyptic number.

It is an amenable number.

80980012920 is an abundant number, since it is smaller than the sum of its proper divisors (162005080200).

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

80980012920 is a wasteful number, since it uses less digits than its factorization.

80980012920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125164 (or 125160 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 80980012920 in words is "eighty billion, nine hundred eighty million, twelve thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 5647 11294 16941 22588 28235 33882 45176 56470 67764 84705 112940 119503 135528 169410 225880 239006 338820 358509 478012 597515 677640 717018 956024 1195030 1434036 1792545 2390060 2868072 3585090 4780120 7170180 14340360 674833441 1349666882 2024500323 2699333764 3374167205 4049000646 5398667528 6748334410 8098001292 10122501615 13496668820 16196002584 20245003230 26993337640 40490006460 80980012920