11111001010987 has 2 divisors, whose sum is σ = 11111001010988. Its totient is φ = 11111001010986.

The previous prime is 11111001010957. The next prime is 11111001011009. The reversal of 11111001010987 is 78901010011111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111001010987 - 2²⁷ = 11110866793259 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111001010957) 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, 5555500505493 + 5555500505494.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500505494).

Almost surely, 2^{11111001010987} is an apocalyptic number.

11111001010987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111001010987 is an equidigital number, since it uses as much as digits as its factorization.

11111001010987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 31.

The spelling of 11111001010987 in words is "eleven trillion, one hundred eleven billion, one million, ten thousand, nine hundred eighty-seven".