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380213665285 = 5181420125597
BaseRepresentation
bin1011000100001101000…
…00000001111000000101
31100100101202002102102011
411202012200001320011
522212134144242120
6450400122214221
736320022554656
oct5420640017005
91310352072364
10380213665285
1113727a77a263
1261830954371
1329b142c398c
141458c41952d
159d547d5c5a
hex5886801e05

380213665285 has 8 divisors (see below), whose sum is σ = 458777153016. Its totient is φ = 302490429120.

The previous prime is 380213665283. The next prime is 380213665339. The reversal of 380213665285 is 582566312083.

It can be written as a sum of positive squares in 4 ways, for example, as 52884361156 + 327329304129 = 229966^2 + 572127^2 .

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

It is not a de Polignac number, because 380213665285 - 21 = 380213665283 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 (380213665283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210061894 + ... + 210063703.

It is an arithmetic number, because the mean of its divisors is an integer number (57347144127).

Almost surely, 2380213665285 is an apocalyptic number.

It is an amenable number.

380213665285 is a deficient number, since it is larger than the sum of its proper divisors (78563487731).

380213665285 is a wasteful number, since it uses less digits than its factorization.

380213665285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420125783.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 380213665285 in words is "three hundred eighty billion, two hundred thirteen million, six hundred sixty-five thousand, two hundred eighty-five".

Divisors: 1 5 181 905 420125597 2100627985 76042733057 380213665285