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80016690580 = 2255138377863
BaseRepresentation
bin100101010000101011…
…1011100110110010100
321122112111112001011121
41022201113130312110
52302333233044310
6100431551213324
75531613435121
oct1124127346624
9248474461147
1080016690580
1130a31376a52
1213611517244
137712729ab8
143c31081748
152134bb90da
hex12a15dcd94

80016690580 has 24 divisors (see below), whose sum is σ = 168040478592. Its totient is φ = 32005642272.

The previous prime is 80016690553. The next prime is 80016690599. The reversal of 80016690580 is 8509661008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988729 + ... + 1066591.

It is an arithmetic number, because the mean of its divisors is an integer number (7001686608).

Almost surely, 280016690580 is an apocalyptic number.

It is an amenable number.

80016690580 is an abundant number, since it is smaller than the sum of its proper divisors (88023788012).

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

80016690580 is a wasteful number, since it uses less digits than its factorization.

80016690580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129255 (or 129253 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 80016690580 in words is "eighty billion, sixteen million, six hundred ninety thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 51383 77863 102766 155726 205532 256915 311452 389315 513830 778630 1027660 1557260 4000834529 8001669058 16003338116 20004172645 40008345290 80016690580