12563949999 has 8 divisors (see below), whose sum is σ = 16815629952. Its totient is φ = 8344118360.

The previous prime is 12563949997. The next prime is 12563950019. The reversal of 12563949999 is 99994936521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12563949999 - 2¹ = 12563949997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12563949997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7961157 + ... + 7962734.

It is an arithmetic number, because the mean of its divisors is an integer number (2101953744).

Almost surely, 2^12563949999 is an apocalyptic number.

12563949999 is a deficient number, since it is larger than the sum of its proper divisors (4251679953).

12563949999 is a wasteful number, since it uses less digits than its factorization.

12563949999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15924157.

The product of its digits is 42515280, while the sum is 66.

The spelling of 12563949999 in words is "twelve billion, five hundred sixty-three million, nine hundred forty-nine thousand, nine hundred ninety-nine".