12345556677774 has 8 divisors (see below), whose sum is σ = 24691113355560. Its totient is φ = 4115185559256.

The previous prime is 12345556677719. The next prime is 12345556677809. The reversal of 12345556677774 is 47777665554321.

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

12345556677774 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12345556677699 and 12345556677708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028796389809 + ... + 1028796389820.

It is an arithmetic number, because the mean of its divisors is an integer number (3086389169445).

Almost surely, 2^{12345556677774} is an apocalyptic number.

12345556677774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12345556677774 is a wasteful number, since it uses less digits than its factorization.

12345556677774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057592779634.

The product of its digits is 1037232000, while the sum is 69.

The spelling of 12345556677774 in words is "twelve trillion, three hundred forty-five billion, five hundred fifty-six million, six hundred seventy-seven thousand, seven hundred seventy-four".