17842778073139 has 2 divisors, whose sum is σ = 17842778073140. Its totient is φ = 17842778073138.

The previous prime is 17842778073053. The next prime is 17842778073157. The reversal of 17842778073139 is 93137087724871.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17842778073139 is a prime.

It is not a weakly prime, because it can be changed into another prime (17842778073179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8921389036569 + 8921389036570.

It is an arithmetic number, because the mean of its divisors is an integer number (8921389036570).

Almost surely, 2^{17842778073139} is an apocalyptic number.

17842778073139 is a deficient number, since it is larger than the sum of its proper divisors (1).

17842778073139 is an equidigital number, since it uses as much as digits as its factorization.

17842778073139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99574272, while the sum is 67.

The spelling of 17842778073139 in words is "seventeen trillion, eight hundred forty-two billion, seven hundred seventy-eight million, seventy-three thousand, one hundred thirty-nine".