12344567779 has 16 divisors (see below), whose sum is σ = 13435319520. Its totient is φ = 11313872640.

The previous prime is 12344567777. The next prime is 12344567789. The reversal of 12344567779 is 97776544321.

It is a cyclic number.

It is not a de Polignac number, because 12344567779 - 2¹ = 12344567777 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12344567771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96309 + ... + 184294.

It is an arithmetic number, because the mean of its divisors is an integer number (839707470).

Almost surely, 2^12344567779 is an apocalyptic number.

12344567779 is a deficient number, since it is larger than the sum of its proper divisors (1090751741).

12344567779 is a wasteful number, since it uses less digits than its factorization.

12344567779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280710.

The product of its digits is 8890560, while the sum is 55.

The spelling of 12344567779 in words is "twelve billion, three hundred forty-four million, five hundred sixty-seven thousand, seven hundred seventy-nine".