Search a number
-
+
12550770493 is a prime number
BaseRepresentation
bin10111011000001010…
…11000111100111101
31012101200111012102121
423230011120330331
5201200444123433
65433222322541
7623006534422
oct135405307475
935350435377
1012550770493
1153606456a8
122523289451
1312502b4921
14870c2bd49
154d6cb6c2d
hex2ec158f3d

12550770493 has 2 divisors, whose sum is σ = 12550770494. Its totient is φ = 12550770492.

The previous prime is 12550770487. The next prime is 12550770503. The reversal of 12550770493 is 39407705521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868359364 + 682411129 = 108942^2 + 26123^2 .

It is an emirp because it is prime and its reverse (39407705521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12550770493 - 25 = 12550770461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12550770293) 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 as a sum of consecutive naturals, namely, 6275385246 + 6275385247.

It is an arithmetic number, because the mean of its divisors is an integer number (6275385247).

Almost surely, 212550770493 is an apocalyptic number.

It is an amenable number.

12550770493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12550770493 is an equidigital number, since it uses as much as digits as its factorization.

12550770493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 12550770493 in words is "twelve billion, five hundred fifty million, seven hundred seventy thousand, four hundred ninety-three".