11177987077 has 2 divisors, whose sum is σ = 11177987078. Its totient is φ = 11177987076.

The previous prime is 11177987059. The next prime is 11177987087. The reversal of 11177987077 is 77078977111.

It is a Cunningham number, because it is equal to 105726²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11177987076 + 1 = 105726^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 11177987077 - 2⁷ = 11177986949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11177987087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5588993538 + 5588993539.

It is an arithmetic number, because the mean of its divisors is an integer number (5588993539).

Almost surely, 2^11177987077 is an apocalyptic number.

It is an amenable number.

11177987077 is a deficient number, since it is larger than the sum of its proper divisors (1).

11177987077 is an equidigital number, since it uses as much as digits as its factorization.

11177987077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1210104, while the sum is 55.

The spelling of 11177987077 in words is "eleven billion, one hundred seventy-seven million, nine hundred eighty-seven thousand, seventy-seven".