881673447397 has 2 divisors, whose sum is σ = 881673447398. Its totient is φ = 881673447396.

The previous prime is 881673447313. The next prime is 881673447437. The reversal of 881673447397 is 793744376188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626576732356 + 255096715041 = 791566^2 + 505071^2 .

It is a cyclic number.

It is not a de Polignac number, because 881673447397 - 2¹¹ = 881673445349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881673445397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440836723698 + 440836723699.

It is an arithmetic number, because the mean of its divisors is an integer number (440836723699).

Almost surely, 2^881673447397 is an apocalyptic number.

It is an amenable number.

881673447397 is a deficient number, since it is larger than the sum of its proper divisors (1).

881673447397 is an equidigital number, since it uses as much as digits as its factorization.

881673447397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170698752, while the sum is 67.

The spelling of 881673447397 in words is "eight hundred eighty-one billion, six hundred seventy-three million, four hundred forty-seven thousand, three hundred ninety-seven".