11155532042987 has 2 divisors, whose sum is σ = 11155532042988. Its totient is φ = 11155532042986.

The previous prime is 11155532042939. The next prime is 11155532043013. The reversal of 11155532042987 is 78924023555111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11155532042987 - 2¹² = 11155532038891 is a prime.

It is not a weakly prime, because it can be changed into another prime (11155532042887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577766021493 + 5577766021494.

It is an arithmetic number, because the mean of its divisors is an integer number (5577766021494).

Almost surely, 2^{11155532042987} is an apocalyptic number.

11155532042987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155532042987 is an equidigital number, since it uses as much as digits as its factorization.

11155532042987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 11155532042987 in words is "eleven trillion, one hundred fifty-five billion, five hundred thirty-two million, forty-two thousand, nine hundred eighty-seven".