12563065213281 has 16 divisors (see below), whose sum is σ = 20303943779520. Its totient is φ = 7613978916960.

The previous prime is 12563065213187. The next prime is 12563065213313. The reversal of 12563065213281 is 18231256036521.

It is a happy number.

12563065213281 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 306 + 52 + 13 + 281 = 666.

It is not a de Polignac number, because 12563065213281 - 2¹⁵ = 12563065180513 is a prime.

It is a super-2 number, since 2×12563065213281² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12563065213681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21149941140 + ... + 21149941733.

It is an arithmetic number, because the mean of its divisors is an integer number (1268996486220).

Almost surely, 2^{12563065213281} is an apocalyptic number.

12563065213281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12563065213281 is a deficient number, since it is larger than the sum of its proper divisors (7740878566239).

12563065213281 is a wasteful number, since it uses less digits than its factorization.

12563065213281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42299882893 (or 42299882887 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 12563065213281 in words is "twelve trillion, five hundred sixty-three billion, sixty-five million, two hundred thirteen thousand, two hundred eighty-one".