12564103731 has 8 divisors (see below), whose sum is σ = 16771553280. Its totient is φ = 8366361672.

The previous prime is 12564103711. The next prime is 12564103787. The reversal of 12564103731 is 13730146521.

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

It is not a de Polignac number, because 12564103731 - 2¹³ = 12564095539 is a prime.

It is a super-2 number, since 2×12564103731² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12564103692 and 12564103701.

It is not an unprimeable number, because it can be changed into a prime (12564103711) 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, 2423851 + ... + 2429028.

It is an arithmetic number, because the mean of its divisors is an integer number (2096444160).

Almost surely, 2^12564103731 is an apocalyptic number.

12564103731 is a deficient number, since it is larger than the sum of its proper divisors (4207449549).

12564103731 is an equidigital number, since it uses as much as digits as its factorization.

12564103731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853745.

The product of its (nonzero) digits is 15120, while the sum is 33.

The spelling of 12564103731 in words is "twelve billion, five hundred sixty-four million, one hundred three thousand, seven hundred thirty-one".