11587189943551 has 2 divisors, whose sum is σ = 11587189943552. Its totient is φ = 11587189943550.

The previous prime is 11587189943509. The next prime is 11587189943617. The reversal of 11587189943551 is 15534998178511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11587189943551 - 2¹⁵ = 11587189910783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11587189943501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5793594971775 + 5793594971776.

It is an arithmetic number, because the mean of its divisors is an integer number (5793594971776).

Almost surely, 2^{11587189943551} is an apocalyptic number.

11587189943551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11587189943551 is an equidigital number, since it uses as much as digits as its factorization.

11587189943551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432000, while the sum is 67.

The spelling of 11587189943551 in words is "eleven trillion, five hundred eighty-seven billion, one hundred eighty-nine million, nine hundred forty-three thousand, five hundred fifty-one".