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10864856705 = 54161868841
BaseRepresentation
bin10100001111001100…
…01000111010000001
31001001012010220111012
422013212020322001
5134222400403310
64554035330305
7533145521033
oct120746107201
931035126435
1010864856705
114675a2371a
122132750995
131041c2aac1
14750d71c53
15438c96c05
hex287988e81

10864856705 has 16 divisors (see below), whose sum is σ = 13574787408. Its totient is φ = 8340864000.

The previous prime is 10864856687. The next prime is 10864856707. The reversal of 10864856705 is 50765846801.

It can be written as a sum of positive squares in 8 ways, for example, as 5694815296 + 5170041409 = 75464^2 + 71903^2 .

It is a de Polignac number, because none of the positive numbers 2k-10864856705 is a prime.

It is a super-2 number, since 2×108648567052 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10864856707) 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, 421916 + ... + 446925.

It is an arithmetic number, because the mean of its divisors is an integer number (848424213).

Almost surely, 210864856705 is an apocalyptic number.

It is an amenable number.

10864856705 is a deficient number, since it is larger than the sum of its proper divisors (2709930703).

10864856705 is an equidigital number, since it uses as much as digits as its factorization.

10864856705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868948.

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

The spelling of 10864856705 in words is "ten billion, eight hundred sixty-four million, eight hundred fifty-six thousand, seven hundred five".

Divisors: 1 5 41 61 205 305 2501 12505 868841 4344205 35622481 52999301 178112405 264996505 2172971341 10864856705