881841196081 has 2 divisors, whose sum is σ = 881841196082. Its totient is φ = 881841196080.

The previous prime is 881841196079. The next prime is 881841196123. The reversal of 881841196081 is 180691148188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645747245056 + 236093951025 = 803584^2 + 485895^2 .

It is a cyclic number.

It is not a de Polignac number, because 881841196081 - 2¹ = 881841196079 is a prime.

It is a super-2 number, since 2×881841196081² (a number of 25 digits) contains 22 as substring.

Together with 881841196079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (881841196021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440920598040 + 440920598041.

It is an arithmetic number, because the mean of its divisors is an integer number (440920598041).

Almost surely, 2^881841196081 is an apocalyptic number.

It is an amenable number.

881841196081 is a deficient number, since it is larger than the sum of its proper divisors (1).

881841196081 is an equidigital number, since it uses as much as digits as its factorization.

881841196081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 55.

The spelling of 881841196081 in words is "eight hundred eighty-one billion, eight hundred forty-one million, one hundred ninety-six thousand, eighty-one".