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55711105909 = 177874164071
BaseRepresentation
bin110011111000101001…
…000000001101110101
312022210121021102002221
4303320221000031311
51403044020342114
641332054202341
74011400405204
oct637051001565
9168717242087
1055711105909
1121699515498
12a9696533b1
13533b028a34
1429a701b23b
1516b0e64524
hexcf8a40375

55711105909 has 8 divisors (see below), whose sum is σ = 59063197248. Its totient is φ = 52367344320.

The previous prime is 55711105907. The next prime is 55711105921. The reversal of 55711105909 is 90950111755.

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

It is a cyclic number.

It is not a de Polignac number, because 55711105909 - 21 = 55711105907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55711105907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068657 + ... + 2095414.

It is an arithmetic number, because the mean of its divisors is an integer number (7382899656).

Almost surely, 255711105909 is an apocalyptic number.

It is an amenable number.

55711105909 is a deficient number, since it is larger than the sum of its proper divisors (3352091339).

55711105909 is a wasteful number, since it uses less digits than its factorization.

55711105909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164875.

The product of its (nonzero) digits is 70875, while the sum is 43.

The spelling of 55711105909 in words is "fifty-five billion, seven hundred eleven million, one hundred five thousand, nine hundred nine".

Divisors: 1 17 787 13379 4164071 70789207 3277123877 55711105909