881881121867 has 4 divisors (see below), whose sum is σ = 881884934280. Its totient is φ = 881877309456.

The previous prime is 881881121809. The next prime is 881881121873. The reversal of 881881121867 is 768121188188.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 881881121867 - 2¹⁸ = 881880859723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (881881121467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535153 + ... + 2029890.

It is an arithmetic number, because the mean of its divisors is an integer number (220471233570).

Almost surely, 2^881881121867 is an apocalyptic number.

881881121867 is a deficient number, since it is larger than the sum of its proper divisors (3812413).

881881121867 is a wasteful number, since it uses less digits than its factorization.

881881121867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812412.

The product of its digits is 2752512, while the sum is 59.

The spelling of 881881121867 in words is "eight hundred eighty-one billion, eight hundred eighty-one million, one hundred twenty-one thousand, eight hundred sixty-seven".