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11808828845 = 511214705979
BaseRepresentation
bin10101111111101110…
…00110110110101101
31010110222101122211022
422333313012312231
5143141030010340
65231440103525
7565430250302
oct127767066655
933428348738
1011808828845
11500a859990
122356904ba5
13116267bcb8
148004970a9
15491aac3b5
hex2bfdc6dad

11808828845 has 8 divisors (see below), whose sum is σ = 15458830560. Its totient is φ = 8588239120.

The previous prime is 11808828803. The next prime is 11808828883. The reversal of 11808828845 is 54882880811.

It is a happy number.

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

It is not a de Polignac number, because 11808828845 - 26 = 11808828781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107352935 + ... + 107353044.

It is an arithmetic number, because the mean of its divisors is an integer number (1932353820).

Almost surely, 211808828845 is an apocalyptic number.

It is an amenable number.

11808828845 is a deficient number, since it is larger than the sum of its proper divisors (3650001715).

11808828845 is a wasteful number, since it uses less digits than its factorization.

11808828845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214705995.

The product of its (nonzero) digits is 1310720, while the sum is 53.

The spelling of 11808828845 in words is "eleven billion, eight hundred eight million, eight hundred twenty-eight thousand, eight hundred forty-five".

Divisors: 1 5 11 55 214705979 1073529895 2361765769 11808828845