Search a number
-
+
10855006081 = 12298832389
BaseRepresentation
bin10100001110000001…
…00011111110000001
31001000111121102222021
422013000203332001
5134212340143311
64553044241441
7532666013023
oct120700437601
931014542867
1010855006081
114670405807
12212b3a0281
13103cb8c22a
1474d92a013
15437e9d171
hex287023f81

10855006081 has 4 divisors (see below), whose sum is σ = 10863839700. Its totient is φ = 10846172464.

The previous prime is 10855006069. The next prime is 10855006121. The reversal of 10855006081 is 18060055801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18060055801 = 139129928459.

It can be written as a sum of positive squares in 2 ways, for example, as 9682560000 + 1172446081 = 98400^2 + 34241^2 .

It is a cyclic number.

It is not a de Polignac number, because 10855006081 - 29 = 10855005569 is a prime.

It is a super-2 number, since 2×108550060812 (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 (10855006051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4414966 + ... + 4417423.

It is an arithmetic number, because the mean of its divisors is an integer number (2715959925).

Almost surely, 210855006081 is an apocalyptic number.

It is an amenable number.

10855006081 is a deficient number, since it is larger than the sum of its proper divisors (8833619).

10855006081 is an equidigital number, since it uses as much as digits as its factorization.

10855006081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833618.

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 10855006081 in words is "ten billion, eight hundred fifty-five million, six thousand, eighty-one".

Divisors: 1 1229 8832389 10855006081