87110568977 has 2 divisors, whose sum is σ = 87110568978. Its totient is φ = 87110568976.

The previous prime is 87110568949. The next prime is 87110569001. The reversal of 87110568977 is 77986501178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84308348881 + 2802220096 = 290359^2 + 52936^2 .

It is a cyclic number.

It is not a de Polignac number, because 87110568977 - 2²² = 87106374673 is a prime.

It is not a weakly prime, because it can be changed into another prime (87115568977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43555284488 + 43555284489.

It is an arithmetic number, because the mean of its divisors is an integer number (43555284489).

Almost surely, 2^87110568977 is an apocalyptic number.

It is an amenable number.

87110568977 is a deficient number, since it is larger than the sum of its proper divisors (1).

87110568977 is an equidigital number, since it uses as much as digits as its factorization.

87110568977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5927040, while the sum is 59.

The spelling of 87110568977 in words is "eighty-seven billion, one hundred ten million, five hundred sixty-eight thousand, nine hundred seventy-seven".