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12860862464 = 21229108271
BaseRepresentation
bin10111111101001000…
…10011000000000000
31020012021222111122102
423332210103000000
5202314340044324
65524100525532
7633463345562
oct137644230000
936167874572
1012860862464
1154aa69235a
1225ab0b08a8
13129c6070b8
148a00ab332
1550411adae
hex2fe913000

12860862464 has 52 divisors (see below), whose sum is σ = 26605678560. Its totient is φ = 6208634880.

The previous prime is 12860862451. The next prime is 12860862473. The reversal of 12860862464 is 46426806821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64649 + ... + 172919.

Almost surely, 212860862464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12860862464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13302839280).

12860862464 is an abundant number, since it is smaller than the sum of its proper divisors (13744816096).

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

12860862464 is an equidigital number, since it uses as much as digits as its factorization.

12860862464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108324 (or 108302 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 12860862464 in words is "twelve billion, eight hundred sixty million, eight hundred sixty-two thousand, four hundred sixty-four".

Divisors: 1 2 4 8 16 29 32 58 64 116 128 232 256 464 512 928 1024 1856 2048 3712 4096 7424 14848 29696 59392 108271 118784 216542 433084 866168 1732336 3139859 3464672 6279718 6929344 12559436 13858688 25118872 27717376 50237744 55434752 100475488 110869504 200950976 221739008 401901952 443478016 803803904 1607607808 3215215616 6430431232 12860862464