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80073426540 = 22357118796579
BaseRepresentation
bin100101010010010111…
…1111000011001101100
321122200110021112021110
41022210233320121230
52302442244122130
6100441335232020
75533202616102
oct1124457703154
9248613245243
1080073426540
1130a603a8578
1213628518610
137721403183
143c3880dc72
152139b74ab0
hex12a4bf866c

80073426540 has 48 divisors (see below), whose sum is σ = 227363431680. Its totient is φ = 21052167360.

The previous prime is 80073426509. The next prime is 80073426547. The reversal of 80073426540 is 4562437008.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80073426547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9394030 + ... + 9402549.

It is an arithmetic number, because the mean of its divisors is an integer number (4736738160).

Almost surely, 280073426540 is an apocalyptic number.

It is an amenable number.

80073426540 is an abundant number, since it is smaller than the sum of its proper divisors (147290005140).

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

80073426540 is a wasteful number, since it uses less digits than its factorization.

80073426540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796662 (or 18796660 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 80073426540 in words is "eighty billion, seventy-three million, four hundred twenty-six thousand, five hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 71 142 213 284 355 426 710 852 1065 1420 2130 4260 18796579 37593158 56389737 75186316 93982895 112779474 187965790 225558948 281948685 375931580 563897370 1127794740 1334557109 2669114218 4003671327 5338228436 6672785545 8007342654 13345571090 16014685308 20018356635 26691142180 40036713270 80073426540