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80907568980 = 22357316214099
BaseRepresentation
bin100101101011001110…
…1111000011101010100
321201211120212100120220
41023112131320131110
52311144314201410
6101100213554340
75562651663210
oct1132635703524
9251746770526
1080907568980
1131349239097
121381b9459b0
13782517b694
143cb7505940
152187ee3070
hex12d6778754

80907568980 has 96 divisors (see below), whose sum is σ = 267256012800. Its totient is φ = 17896602240.

The previous prime is 80907568967. The next prime is 80907569003. The reversal of 80907568980 is 8986570908.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3094030 + ... + 3120069.

It is an arithmetic number, because the mean of its divisors is an integer number (2783916800).

Almost surely, 280907568980 is an apocalyptic number.

It is an amenable number.

80907568980 is an abundant number, since it is smaller than the sum of its proper divisors (186348443820).

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

80907568980 is a wasteful number, since it uses less digits than its factorization.

80907568980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214149 (or 6214147 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 80907568980 in words is "eighty billion, nine hundred seven million, five hundred sixty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 31 35 42 60 62 70 84 93 105 124 140 155 186 210 217 310 372 420 434 465 620 651 868 930 1085 1302 1860 2170 2604 3255 4340 6510 13020 6214099 12428198 18642297 24856396 31070495 37284594 43498693 62140990 74569188 86997386 93211485 124281980 130496079 173994772 186422970 192637069 217493465 260992158 372845940 385274138 434986930 521984316 577911207 652480395 770548276 869973860 963185345 1155822414 1304960790 1348459483 1926370690 2311644828 2609921580 2696918966 2889556035 3852741380 4045378449 5393837932 5779112070 6742297415 8090756898 11558224140 13484594830 16181513796 20226892245 26969189660 40453784490 80907568980