12607121563 has 4 divisors (see below), whose sum is σ = 12875358240. Its totient is φ = 12338884888.

The previous prime is 12607121561. The next prime is 12607121609. The reversal of 12607121563 is 36512170621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36512170621 = 43 ⋅849120247.

It is a cyclic number.

It is not a de Polignac number, because 12607121563 - 2¹ = 12607121561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12607121561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134118268 + ... + 134118361.

It is an arithmetic number, because the mean of its divisors is an integer number (3218839560).

Almost surely, 2^12607121563 is an apocalyptic number.

12607121563 is a deficient number, since it is larger than the sum of its proper divisors (268236677).

12607121563 is an equidigital number, since it uses as much as digits as its factorization.

12607121563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268236676.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 12607121563 in words is "twelve billion, six hundred seven million, one hundred twenty-one thousand, five hundred sixty-three".