18770979709439 has 2 divisors, whose sum is σ = 18770979709440. Its totient is φ = 18770979709438.

The previous prime is 18770979709429. The next prime is 18770979709457. The reversal of 18770979709439 is 93490797907781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18770979709439 - 2³⁶ = 18702260232703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18770979709429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9385489854719 + 9385489854720.

It is an arithmetic number, because the mean of its divisors is an integer number (9385489854720).

Almost surely, 2^{18770979709439} is an apocalyptic number.

18770979709439 is a deficient number, since it is larger than the sum of its proper divisors (1).

18770979709439 is an equidigital number, since it uses as much as digits as its factorization.

18770979709439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512284256, while the sum is 80.

The spelling of 18770979709439 in words is "eighteen trillion, seven hundred seventy billion, nine hundred seventy-nine million, seven hundred nine thousand, four hundred thirty-nine".