1165550655587 has 2 divisors, whose sum is σ = 1165550655588. Its totient is φ = 1165550655586.

The previous prime is 1165550655551. The next prime is 1165550655667. The reversal of 1165550655587 is 7855560555611.

It is a weak prime.

It is an emirp because it is prime and its reverse (7855560555611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1165550655587 - 2¹⁴ = 1165550639203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1165550652587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582775327793 + 582775327794.

It is an arithmetic number, because the mean of its divisors is an integer number (582775327794).

Almost surely, 2^{1165550655587} is an apocalyptic number.

1165550655587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165550655587 is an equidigital number, since it uses as much as digits as its factorization.

1165550655587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500000, while the sum is 59.

The spelling of 1165550655587 in words is "one trillion, one hundred sixty-five billion, five hundred fifty million, six hundred fifty-five thousand, five hundred eighty-seven".