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55670983780 = 2252819905869
BaseRepresentation
bin110011110110001111…
…111100110001100100
312022200210202222220011
4303312033330301210
51403003232440110
641324102220004
74010402361106
oct636617746144
9168623688804
1055670983780
1121678901105
12a958124604
13533291b729
1429a1975576
1516ac68b48a
hexcf63fcc64

55670983780 has 24 divisors (see below), whose sum is σ = 117325124280. Its totient is φ = 22189144320.

The previous prime is 55670983757. The next prime is 55670983787. The reversal of 55670983780 is 8738907655.

It can be written as a sum of positive squares in 4 ways, for example, as 9511320676 + 46159663104 = 97526^2 + 214848^2 .

It is not an unprimeable number, because it can be changed into a prime (55670983787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947315 + ... + 4958554.

It is an arithmetic number, because the mean of its divisors is an integer number (4888546845).

Almost surely, 255670983780 is an apocalyptic number.

It is an amenable number.

55670983780 is an abundant number, since it is smaller than the sum of its proper divisors (61654140500).

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

55670983780 is a wasteful number, since it uses less digits than its factorization.

55670983780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906159 (or 9906157 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 55670983780 in words is "fifty-five billion, six hundred seventy million, nine hundred eighty-three thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 281 562 1124 1405 2810 5620 9905869 19811738 39623476 49529345 99058690 198117380 2783549189 5567098378 11134196756 13917745945 27835491890 55670983780