12563775393 has 16 divisors (see below), whose sum is σ = 18294385536. Its totient is φ = 7622657280.

The previous prime is 12563775383. The next prime is 12563775397. The reversal of 12563775393 is 39357736521.

It is not a de Polignac number, because 12563775393 - 2¹⁰ = 12563774369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12563775397) 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 in 15 ways as a sum of consecutive naturals, for example, 2265880 + ... + 2271417.

It is an arithmetic number, because the mean of its divisors is an integer number (1143399096).

Almost surely, 2^12563775393 is an apocalyptic number.

12563775393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12563775393 is a deficient number, since it is larger than the sum of its proper divisors (5730610143).

12563775393 is a wasteful number, since it uses less digits than its factorization.

12563775393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537384.

The product of its digits is 3572100, while the sum is 51.

The spelling of 12563775393 in words is "twelve billion, five hundred sixty-three million, seven hundred seventy-five thousand, three hundred ninety-three".