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55306143673 = 11171961255181
BaseRepresentation
bin110011100000100000…
…001100011110111001
312021202101021012100121
4303200200030132321
51401231333044143
641223550333241
73665352315244
oct634040143671
9167671235317
1055306143673
1121500970360
12a875aba221
1352a516a901
14296932425b
15168a6207ed
hexce080c7b9

55306143673 has 32 divisors (see below), whose sum is σ = 68347946880. Its totient is φ = 44095104000.

The previous prime is 55306143661. The next prime is 55306143703. The reversal of 55306143673 is 37634160355.

It is a cyclic number.

It is not a de Polignac number, because 55306143673 - 213 = 55306135481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55306143773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89143 + ... + 344323.

It is an arithmetic number, because the mean of its divisors is an integer number (2135873340).

Almost surely, 255306143673 is an apocalyptic number.

It is an amenable number.

55306143673 is a deficient number, since it is larger than the sum of its proper divisors (13041803207).

55306143673 is a wasteful number, since it uses less digits than its factorization.

55306143673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255289.

The product of its (nonzero) digits is 680400, while the sum is 43.

The spelling of 55306143673 in words is "fifty-five billion, three hundred six million, one hundred forty-three thousand, six hundred seventy-three".

Divisors: 1 11 17 19 61 187 209 323 671 1037 1159 3553 11407 12749 19703 216733 255181 2806991 4338077 4848439 15566041 47718847 53332829 82423463 171226451 264622697 295754779 906658093 2910849667 3253302569 5027831243 55306143673