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10881617489 = 311971781827
BaseRepresentation
bin10100010001001100…
…00100111001010001
31001002100200102221222
422020212010321101
5134241143224424
64555434454425
7533441136221
oct121046047121
931070612858
1010881617489
114684431306
122138294415
131045548a22
14753296081
1543a4a7e5e
hex288984e51

10881617489 has 8 divisors (see below), whose sum is σ = 11289662208. Its totient is φ = 10477136880.

The previous prime is 10881617459. The next prime is 10881617491. The reversal of 10881617489 is 98471618801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10881617489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10881617489.

It is not an unprimeable number, because it can be changed into a prime (10881617419) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 884807 + ... + 897020.

It is an arithmetic number, because the mean of its divisors is an integer number (1411207776).

Almost surely, 210881617489 is an apocalyptic number.

It is an amenable number.

10881617489 is a deficient number, since it is larger than the sum of its proper divisors (408044719).

10881617489 is a wasteful number, since it uses less digits than its factorization.

10881617489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782055.

The product of its (nonzero) digits is 774144, while the sum is 53.

The spelling of 10881617489 in words is "ten billion, eight hundred eighty-one million, six hundred seventeen thousand, four hundred eighty-nine".

Divisors: 1 31 197 6107 1781827 55236637 351019919 10881617489