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2755565568 = 2113572113
BaseRepresentation
bin1010010000111110…
…1001100000000000
321010001002020100000
42210033221200000
521120411044233
61133233200000
7125166630600
oct24417514000
97101066300
102755565568
111194499218
1264aa00000
1334bb70192
141c1d78c00
15111dadd13
hexa43e9800

2755565568 has 432 divisors, whose sum is σ = 9685788840. Its totient is φ = 780337152.

The previous prime is 2755565567. The next prime is 2755565663. The reversal of 2755565568 is 8655655572.

2755565568 is a `hidden beast` number, since 2 + 75 + 5 + 5 + 6 + 5 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (12600000) is a multiple of the sum of its prime divisors (125).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2755565567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24385480 + ... + 24385592.

Almost surely, 22755565568 is an apocalyptic number.

2755565568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2755565568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4842894420).

2755565568 is an abundant number, since it is smaller than the sum of its proper divisors (6930223272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2755565568 is an equidigital number, since it uses as much as digits as its factorization.

2755565568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 125 counting only the distinct ones).

The product of its digits is 12600000, while the sum is 54.

The square root of 2755565568 is about 52493.4811952875. The cubic root of 2755565568 is about 1401.9641763384.

The spelling of 2755565568 in words is "two billion, seven hundred fifty-five million, five hundred sixty-five thousand, five hundred sixty-eight".