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10305668881 = 47161218521
BaseRepresentation
bin10011001100100010…
…00000011100010001
3222121012221020000001
421212101000130101
5132101222401011
64422342130001
7513245511604
oct114621003421
928535836001
1010305668881
114409310622
121bb7420901
13c83121631
146da9b033b
15404b3b7c1
hex266440711

10305668881 has 4 divisors (see below), whose sum is σ = 10305934564. Its totient is φ = 10305403200.

The previous prime is 10305668797. The next prime is 10305668911. The reversal of 10305668881 is 18886650301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 475937856 + 9829731025 = 21816^2 + 99145^2 .

It is a cyclic number.

It is not a de Polignac number, because 10305668881 - 219 = 10305144593 is a prime.

It is a super-2 number, since 2×103056688812 (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 (10305668281) 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, 62100 + ... + 156421.

It is an arithmetic number, because the mean of its divisors is an integer number (2576483641).

Almost surely, 210305668881 is an apocalyptic number.

It is an amenable number.

10305668881 is a deficient number, since it is larger than the sum of its proper divisors (265683).

10305668881 is an equidigital number, since it uses as much as digits as its factorization.

10305668881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265682.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 10305668881 in words is "ten billion, three hundred five million, six hundred sixty-eight thousand, eight hundred eighty-one".

Divisors: 1 47161 218521 10305668881