19440013046339 has 2 divisors, whose sum is σ = 19440013046340. Its totient is φ = 19440013046338.

The previous prime is 19440013046291. The next prime is 19440013046359. The reversal of 19440013046339 is 93364031004491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19440013046339 is a prime.

It is a super-2 number, since 2×19440013046339² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19440013046293 and 19440013046302.

It is not a weakly prime, because it can be changed into another prime (19440013046359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9720006523169 + 9720006523170.

It is an arithmetic number, because the mean of its divisors is an integer number (9720006523170).

Almost surely, 2^{19440013046339} is an apocalyptic number.

19440013046339 is a deficient number, since it is larger than the sum of its proper divisors (1).

19440013046339 is an equidigital number, since it uses as much as digits as its factorization.

19440013046339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 19440013046339 in words is "nineteen trillion, four hundred forty billion, thirteen million, forty-six thousand, three hundred thirty-nine".