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12791390395 = 57365468297
BaseRepresentation
bin10111110100110110…
…10010000010111011
31020000110020221212211
423322123102002323
5202144043443040
65513135515551
7631661011240
oct137233220273
936013227784
1012791390395
115474451a23
12258b988bb7
13128b0c1974
14894b855c7
154ece968ea
hex2fa6d20bb

12791390395 has 8 divisors (see below), whose sum is σ = 17542478304. Its totient is φ = 8771239104.

The previous prime is 12791390389. The next prime is 12791390399. The reversal of 12791390395 is 59309319721.

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 12791390395 - 25 = 12791390363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12791390399) 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, 182734114 + ... + 182734183.

It is an arithmetic number, because the mean of its divisors is an integer number (2192809788).

Almost surely, 212791390395 is an apocalyptic number.

12791390395 is a deficient number, since it is larger than the sum of its proper divisors (4751087909).

12791390395 is an equidigital number, since it uses as much as digits as its factorization.

12791390395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365468309.

The product of its (nonzero) digits is 459270, while the sum is 49.

The spelling of 12791390395 in words is "twelve billion, seven hundred ninety-one million, three hundred ninety thousand, three hundred ninety-five".

Divisors: 1 5 7 35 365468297 1827341485 2558278079 12791390395