19882581066739 has 2 divisors, whose sum is σ = 19882581066740. Its totient is φ = 19882581066738.

The previous prime is 19882581066697. The next prime is 19882581066743. The reversal of 19882581066739 is 93766018528891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19882581066739 is a prime.

It is not a weakly prime, because it can be changed into another prime (19882581766739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9941290533369 + 9941290533370.

It is an arithmetic number, because the mean of its divisors is an integer number (9941290533370).

Almost surely, 2^{19882581066739} is an apocalyptic number.

19882581066739 is a deficient number, since it is larger than the sum of its proper divisors (1).

19882581066739 is an equidigital number, since it uses as much as digits as its factorization.

19882581066739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313528320, while the sum is 73.

The spelling of 19882581066739 in words is "nineteen trillion, eight hundred eighty-two billion, five hundred eighty-one million, sixty-six thousand, seven hundred thirty-nine".