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12810942811 is a prime number
BaseRepresentation
bin10111110111001011…
…10111100101011011
31020001211001022202101
423323211313211123
5202214100132221
65515114544231
7632316134332
oct137345674533
936054038671
1012810942811
115484496a47
122596438077
131292179444
148975d4d19
154eea59d91
hex2fb97795b

12810942811 has 2 divisors, whose sum is σ = 12810942812. Its totient is φ = 12810942810.

The previous prime is 12810942761. The next prime is 12810942857. The reversal of 12810942811 is 11824901821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12810942811 - 229 = 12274071899 is a prime.

It is not a weakly prime, because it can be changed into another prime (12810942211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405471405 + 6405471406.

It is an arithmetic number, because the mean of its divisors is an integer number (6405471406).

Almost surely, 212810942811 is an apocalyptic number.

12810942811 is a deficient number, since it is larger than the sum of its proper divisors (1).

12810942811 is an equidigital number, since it uses as much as digits as its factorization.

12810942811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 37.

The spelling of 12810942811 in words is "twelve billion, eight hundred ten million, nine hundred forty-two thousand, eight hundred eleven".