1165662211787 has 2 divisors, whose sum is σ = 1165662211788. Its totient is φ = 1165662211786.

The previous prime is 1165662211757. The next prime is 1165662211789. The reversal of 1165662211787 is 7871122665611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1165662211787 - 2¹² = 1165662207691 is a prime.

It is a super-3 number, since 3×1165662211787³ (a number of 37 digits) contains 333 as substring.

Together with 1165662211789, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1165662211789) 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, 582831105893 + 582831105894.

It is an arithmetic number, because the mean of its divisors is an integer number (582831105894).

Almost surely, 2^{1165662211787} is an apocalyptic number.

1165662211787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165662211787 is an equidigital number, since it uses as much as digits as its factorization.

1165662211787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The spelling of 1165662211787 in words is "one trillion, one hundred sixty-five billion, six hundred sixty-two million, two hundred eleven thousand, seven hundred eighty-seven".