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12445555579 = 193717703493
BaseRepresentation
bin10111001011101000…
…00001101101111011
31012010100111201200221
423211310001231323
5200442030234304
65414543240511
7620261322412
oct134564015573
935110451627
1012445555579
115307212126
1224b3ba9137
131234566592
14860c80479
154cc932054
hex2e5d01b7b

12445555579 has 8 divisors (see below), whose sum is σ = 13454655440. Its totient is φ = 11471862816.

The previous prime is 12445555543. The next prime is 12445555601. The reversal of 12445555579 is 97555554421.

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 12445555579 - 211 = 12445553531 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12445555519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8851044 + ... + 8852449.

It is an arithmetic number, because the mean of its divisors is an integer number (1681831930).

Almost surely, 212445555579 is an apocalyptic number.

12445555579 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12445555579 is a deficient number, since it is larger than the sum of its proper divisors (1009099861).

12445555579 is a wasteful number, since it uses less digits than its factorization.

12445555579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17703549.

The product of its digits is 6300000, while the sum is 52.

The spelling of 12445555579 in words is "twelve billion, four hundred forty-five million, five hundred fifty-five thousand, five hundred seventy-nine".

Divisors: 1 19 37 703 17703493 336366367 655029241 12445555579