12704778543 has 8 divisors (see below), whose sum is σ = 17143797888. Its totient is φ = 8367805784.

The previous prime is 12704778533. The next prime is 12704778551. The reversal of 12704778543 is 34587740721.

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 12704778543 - 2¹² = 12704774447 is a prime.

It is a super-2 number, since 2×12704778543² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12704778492 and 12704778501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12704778533) 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, 25511355 + ... + 25511852.

It is an arithmetic number, because the mean of its divisors is an integer number (2142974736).

Almost surely, 2^12704778543 is an apocalyptic number.

12704778543 is a deficient number, since it is larger than the sum of its proper divisors (4439019345).

12704778543 is an equidigital number, since it uses as much as digits as its factorization.

12704778543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51023293.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 12704778543 in words is "twelve billion, seven hundred four million, seven hundred seventy-eight thousand, five hundred forty-three".