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10663220867 = 13820247759
BaseRepresentation
bin10011110111001001…
…11101011010000011
31000112010201202010012
421323210331122003
5133314241031432
64522033455135
7525146611325
oct117344753203
930463652105
1010663220867
114582123732
1220971114ab
13100c220060
14732285615
15426217cb2
hex27b93d683

10663220867 has 4 divisors (see below), whose sum is σ = 11483468640. Its totient is φ = 9842973096.

The previous prime is 10663220861. The next prime is 10663220881. The reversal of 10663220867 is 76802236601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76802236601 = 194042222979.

It is a cyclic number.

It is not a de Polignac number, because 10663220867 - 212 = 10663216771 is a prime.

It is a super-2 number, since 2×106632208672 (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 (10663220861) 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 3 ways as a sum of consecutive naturals, for example, 410123867 + ... + 410123892.

It is an arithmetic number, because the mean of its divisors is an integer number (2870867160).

Almost surely, 210663220867 is an apocalyptic number.

10663220867 is a deficient number, since it is larger than the sum of its proper divisors (820247773).

10663220867 is an equidigital number, since it uses as much as digits as its factorization.

10663220867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820247772.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 10663220867 in words is "ten billion, six hundred sixty-three million, two hundred twenty thousand, eight hundred sixty-seven".

Divisors: 1 13 820247759 10663220867