12345567782 has 16 divisors (see below), whose sum is σ = 19118477952. Its totient is φ = 5972799360.

The previous prime is 12345567781. The next prime is 12345567797. The reversal of 12345567782 is 28776554321.

It is a self number, because there is not a number n which added to its sum of digits gives 12345567782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345567781) 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, 712688 + ... + 729804.

It is an arithmetic number, because the mean of its divisors is an integer number (1194904872).

Almost surely, 2^12345567782 is an apocalyptic number.

12345567782 is a deficient number, since it is larger than the sum of its proper divisors (6772910170).

12345567782 is a wasteful number, since it uses less digits than its factorization.

12345567782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28783.

The product of its digits is 2822400, while the sum is 50.

The spelling of 12345567782 in words is "twelve billion, three hundred forty-five million, five hundred sixty-seven thousand, seven hundred eighty-two".