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80405376252 = 223192315332833
BaseRepresentation
bin100101011100010001…
…0001010110011111100
321200112120220022200020
41022320202022303330
52304132234020002
6100534314132140
75544343264365
oct1127042126374
9250476808606
1080405376252
1131110814283
12136bb721050
137775109516
143c6a93cb6c
152158d952bc
hex12b888acfc

80405376252 has 48 divisors (see below), whose sum is σ = 206073288960. Its totient is φ = 24287205888.

The previous prime is 80405376211. The next prime is 80405376257. The reversal of 80405376252 is 25267350408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80405376257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7661173 + ... + 7671660.

It is an arithmetic number, because the mean of its divisors is an integer number (4293193520).

Almost surely, 280405376252 is an apocalyptic number.

It is an amenable number.

80405376252 is an abundant number, since it is smaller than the sum of its proper divisors (125667912708).

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

80405376252 is a wasteful number, since it uses less digits than its factorization.

80405376252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15332882 (or 15332880 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 80405376252 in words is "eighty billion, four hundred five million, three hundred seventy-six thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 12 19 23 38 46 57 69 76 92 114 138 228 276 437 874 1311 1748 2622 5244 15332833 30665666 45998499 61331332 91996998 183993996 291323827 352655159 582647654 705310318 873971481 1057965477 1165295308 1410620636 1747942962 2115930954 3495885924 4231861908 6700448021 13400896042 20101344063 26801792084 40202688126 80405376252