1135966581787 has 2 divisors, whose sum is σ = 1135966581788. Its totient is φ = 1135966581786.

The previous prime is 1135966581781. The next prime is 1135966581857. The reversal of 1135966581787 is 7871856695311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135966581787 is a prime.

It is a super-2 number, since 2×1135966581787² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1135966581781) 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, 567983290893 + 567983290894.

It is an arithmetic number, because the mean of its divisors is an integer number (567983290894).

Almost surely, 2^{1135966581787} is an apocalyptic number.

1135966581787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135966581787 is an equidigital number, since it uses as much as digits as its factorization.

1135966581787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 67.

The spelling of 1135966581787 in words is "one trillion, one hundred thirty-five billion, nine hundred sixty-six million, five hundred eighty-one thousand, seven hundred eighty-seven".