881999999999977 has 2 divisors, whose sum is σ = 881999999999978. Its totient is φ = 881999999999976.

The previous prime is 881999999999971. The next prime is 882000000000019. The reversal of 881999999999977 is 779999999999188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739375714463296 + 142624285536681 = 27191464^2 + 11942541^2 .

It is a cyclic number.

It is not a de Polignac number, because 881999999999977 - 2¹⁹ = 881999999475689 is a prime.

It is not a weakly prime, because it can be changed into another prime (881999999999971) 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, 440999999999988 + 440999999999989.

It is an arithmetic number, because the mean of its divisors is an integer number (440999999999989).

Almost surely, 2^{881999999999977} is an apocalyptic number.

It is an amenable number.

881999999999977 is a deficient number, since it is larger than the sum of its proper divisors (1).

881999999999977 is an equidigital number, since it uses as much as digits as its factorization.

881999999999977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10934555881536, while the sum is 121.

The spelling of 881999999999977 in words is "eight hundred eighty-one trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-seven".