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12790120145 = 511792943641
BaseRepresentation
bin10111110100101100…
…11011111011010001
31020000100212102102112
423322112123323101
5202143232321040
65513052355105
7631644141005
oct137226337321
936010772375
1012790120145
115473764630
12258b475a95
13128aa6873a
14894934705
154ecce5365
hex2fa59bed1

12790120145 has 16 divisors (see below), whose sum is σ = 16955377920. Its totient is φ = 9184156800.

The previous prime is 12790120121. The next prime is 12790120157. The reversal of 12790120145 is 54102109721.

It is not a de Polignac number, because 12790120145 - 214 = 12790103761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467476 + ... + 1476165.

It is an arithmetic number, because the mean of its divisors is an integer number (1059711120).

Almost surely, 212790120145 is an apocalyptic number.

It is an amenable number.

12790120145 is a deficient number, since it is larger than the sum of its proper divisors (4165257775).

12790120145 is a wasteful number, since it uses less digits than its factorization.

12790120145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943736.

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 12790120145 its reverse (54102109721), we get a palindrome (66892229866).

The spelling of 12790120145 in words is "twelve billion, seven hundred ninety million, one hundred twenty thousand, one hundred forty-five".

Divisors: 1 5 11 55 79 395 869 4345 2943641 14718205 32380051 161900255 232547639 1162738195 2558024029 12790120145