Search a number
-
+
12708107149 is a prime number
BaseRepresentation
bin10111101010111011…
…00101001110001101
31012210122112201202011
423311131211032031
5202011233412044
65501002501221
7626630062033
oct136535451615
935718481664
1012708107149
115431438aa1
122567b04811
131276a8203a
14887aa6553
154e59e5134
hex2f576538d

12708107149 has 2 divisors, whose sum is σ = 12708107150. Its totient is φ = 12708107148.

The previous prime is 12708107141. The next prime is 12708107201. The reversal of 12708107149 is 94170180721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12065484649 + 642622500 = 109843^2 + 25350^2 .

It is a cyclic number.

It is not a de Polignac number, because 12708107149 - 23 = 12708107141 is a prime.

It is a super-2 number, since 2×127081071492 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12708107141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6354053574 + 6354053575.

It is an arithmetic number, because the mean of its divisors is an integer number (6354053575).

Almost surely, 212708107149 is an apocalyptic number.

It is an amenable number.

12708107149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12708107149 is an equidigital number, since it uses as much as digits as its factorization.

12708107149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 12708107149 in words is "twelve billion, seven hundred eight million, one hundred seven thousand, one hundred forty-nine".