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12797622938 = 2191013334451
BaseRepresentation
bin10111110101100110…
…00011101010011010
31020000212222121022202
423322303003222122
5202202142413223
65513521250202
7632065000022
oct137263035232
936025877282
1012797622938
115477a19591
122591a93962
13128c494769
14895928a82
154ed7c8428
hex2facc3a9a

12797622938 has 16 divisors (see below), whose sum is σ = 20406846240. Its totient is φ = 6002010000.

The previous prime is 12797622931. The next prime is 12797622973. The reversal of 12797622938 is 83922679721.

It is not an unprimeable number, because it can be changed into a prime (12797622931) 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, 1663388 + ... + 1671063.

It is an arithmetic number, because the mean of its divisors is an integer number (1275427890).

Almost surely, 212797622938 is an apocalyptic number.

12797622938 is a deficient number, since it is larger than the sum of its proper divisors (7609223302).

12797622938 is a wasteful number, since it uses less digits than its factorization.

12797622938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334573.

The product of its digits is 4572288, while the sum is 56.

The spelling of 12797622938 in words is "twelve billion, seven hundred ninety-seven million, six hundred twenty-two thousand, nine hundred thirty-eight".

Divisors: 1 2 19 38 101 202 1919 3838 3334451 6668902 63354569 126709138 336779551 673559102 6398811469 12797622938