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12870565682 = 213495021757
BaseRepresentation
bin10111111110010010…
…10011111100110010
31020012222020110221212
423333021103330302
5202324331100212
65525044520122
7633642001052
oct137711237462
936188213855
1012870565682
11550510a547
1225b23b0042
1312a1623850
148a14b5562
15504dd5e22
hex2ff253f32

12870565682 has 8 divisors (see below), whose sum is σ = 20790913836. Its totient is φ = 5940261072.

The previous prime is 12870565663. The next prime is 12870565753. The reversal of 12870565682 is 28656507821.

It can be written as a sum of positive squares in 2 ways, for example, as 11741672881 + 1128892801 = 108359^2 + 33599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128705656822 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12870565682.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247510853 + ... + 247510904.

Almost surely, 212870565682 is an apocalyptic number.

12870565682 is a deficient number, since it is larger than the sum of its proper divisors (7920348154).

12870565682 is a wasteful number, since it uses less digits than its factorization.

12870565682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495021772.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 12870565682 in words is "twelve billion, eight hundred seventy million, five hundred sixty-five thousand, six hundred eighty-two".

Divisors: 1 2 13 26 495021757 990043514 6435282841 12870565682