1155667711823 has 2 divisors, whose sum is σ = 1155667711824. Its totient is φ = 1155667711822.

The previous prime is 1155667711789. The next prime is 1155667711867. The reversal of 1155667711823 is 3281177665511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155667711823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155667710823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577833855911 + 577833855912.

It is an arithmetic number, because the mean of its divisors is an integer number (577833855912).

Almost surely, 2^{1155667711823} is an apocalyptic number.

1155667711823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155667711823 is an equidigital number, since it uses as much as digits as its factorization.

1155667711823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 53.

The spelling of 1155667711823 in words is "one trillion, one hundred fifty-five billion, six hundred sixty-seven million, seven hundred eleven thousand, eight hundred twenty-three".