Search a number
-
+
80791481205 = 32529237126111
BaseRepresentation
bin100101100111110001…
…1000010101101110101
321201112111102111002200
41023033203002231311
52310430104344310
6101040505455113
75560042154661
oct1131743025565
9251474374080
1080791481205
1131299759686
12137a8aa1499
1378070c43a6
143ca5d278a1
15217cc119c0
hex12cf8c2b75

80791481205 has 48 divisors (see below), whose sum is σ = 144934133760. Its totient is φ = 41583830400.

The previous prime is 80791481191. The next prime is 80791481269. The reversal of 80791481205 is 50218419708.

80791481205 is a `hidden beast` number, since 80 + 7 + 91 + 481 + 2 + 0 + 5 = 666.

It is not a de Polignac number, because 80791481205 - 210 = 80791480181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3081100 + ... + 3107210.

It is an arithmetic number, because the mean of its divisors is an integer number (3019461120).

Almost surely, 280791481205 is an apocalyptic number.

It is an amenable number.

80791481205 is a deficient number, since it is larger than the sum of its proper divisors (64142652555).

80791481205 is a wasteful number, since it uses less digits than its factorization.

80791481205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28522 (or 28519 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 80791481205 in words is "eighty billion, seven hundred ninety-one million, four hundred eighty-one thousand, two hundred five".

Divisors: 1 3 5 9 15 29 45 87 145 261 435 1305 2371 7113 11855 21339 26111 35565 68759 78333 106695 130555 206277 234999 343795 391665 618831 757219 1031385 1174995 2271657 3094155 3786095 6814971 11358285 34074855 61909181 185727543 309545905 557182629 928637715 1795366249 2785913145 5386098747 8976831245 16158296241 26930493735 80791481205