12327582778 has 24 divisors (see below), whose sum is σ = 21711424032. Its totient is φ = 5233869144.

The previous prime is 12327582763. The next prime is 12327582811. The reversal of 12327582778 is 87728572321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577326 + ... + 598297.

It is an arithmetic number, because the mean of its divisors is an integer number (904642668).

Almost surely, 2^12327582778 is an apocalyptic number.

12327582778 is a deficient number, since it is larger than the sum of its proper divisors (9383841254).

12327582778 is a wasteful number, since it uses less digits than its factorization.

12327582778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175746 (or 1175739 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 52.

The spelling of 12327582778 in words is "twelve billion, three hundred twenty-seven million, five hundred eighty-two thousand, seven hundred seventy-eight".