12343657779 has 48 divisors (see below), whose sum is σ = 19317841920. Its totient is φ = 7572692160.

The previous prime is 12343657771. The next prime is 12343657811. The reversal of 12343657779 is 97775634321.

12343657779 is a `hidden beast` number, since 1 + 2 + 34 + 36 + 577 + 7 + 9 = 666.

It is not a de Polignac number, because 12343657779 - 2³ = 12343657771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12343657771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1104582 + ... + 1115700.

It is an arithmetic number, because the mean of its divisors is an integer number (402455040).

Almost surely, 2^12343657779 is an apocalyptic number.

12343657779 is a deficient number, since it is larger than the sum of its proper divisors (6974184141).

12343657779 is a wasteful number, since it uses less digits than its factorization.

12343657779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352 (or 11349 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 54.

The spelling of 12343657779 in words is "twelve billion, three hundred forty-three million, six hundred fifty-seven thousand, seven hundred seventy-nine".