12564234803 has 4 divisors (see below), whose sum is σ = 12647441808. Its totient is φ = 12481027800.

The previous prime is 12564234799. The next prime is 12564234811. The reversal of 12564234803 is 30843246521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12564234803 - 2² = 12564234799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12564234853) 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, 41603276 + ... + 41603577.

It is an arithmetic number, because the mean of its divisors is an integer number (3161860452).

Almost surely, 2^12564234803 is an apocalyptic number.

12564234803 is a deficient number, since it is larger than the sum of its proper divisors (83207005).

12564234803 is an equidigital number, since it uses as much as digits as its factorization.

12564234803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83207004.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 12564234803 in words is "twelve billion, five hundred sixty-four million, two hundred thirty-four thousand, eight hundred three".