18044040779 has 2 divisors, whose sum is σ = 18044040780. Its totient is φ = 18044040778.

The previous prime is 18044040757. The next prime is 18044040803. The reversal of 18044040779 is 97704044081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18044040779 - 2³² = 13749073483 is a prime.

It is not a weakly prime, because it can be changed into another prime (18044040719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9022020389 + 9022020390.

It is an arithmetic number, because the mean of its divisors is an integer number (9022020390).

Almost surely, 2^18044040779 is an apocalyptic number.

18044040779 is a deficient number, since it is larger than the sum of its proper divisors (1).

18044040779 is an equidigital number, since it uses as much as digits as its factorization.

18044040779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 18044040779 in words is "eighteen billion, forty-four million, forty thousand, seven hundred seventy-nine".