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12631398275 = 521867127061
BaseRepresentation
bin10111100001110001…
…11101011110000011
31012121022012111221202
423300320331132003
5201332114221100
65445222411415
7625006054016
oct136070753603
935538174852
1012631398275
1153a2105531
122546290b6b
131263c04982
1487b81937d
154ddde17d5
hex2f0e3d783

12631398275 has 12 divisors (see below), whose sum is σ = 15664351584. Its totient is φ = 10104204000.

The previous prime is 12631398211. The next prime is 12631398277. The reversal of 12631398275 is 57289313621.

It is not a de Polignac number, because 12631398275 - 26 = 12631398211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12631398277) 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 11 ways as a sum of consecutive naturals, for example, 453245 + ... + 480305.

It is an arithmetic number, because the mean of its divisors is an integer number (1305362632).

Almost surely, 212631398275 is an apocalyptic number.

12631398275 is a deficient number, since it is larger than the sum of its proper divisors (3032953309).

12631398275 is a wasteful number, since it uses less digits than its factorization.

12631398275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45742 (or 45737 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The spelling of 12631398275 in words is "twelve billion, six hundred thirty-one million, three hundred ninety-eight thousand, two hundred seventy-five".

Divisors: 1 5 25 18671 27061 93355 135305 466775 676525 505255931 2526279655 12631398275