1155711489979 has 2 divisors, whose sum is σ = 1155711489980. Its totient is φ = 1155711489978.

The previous prime is 1155711489967. The next prime is 1155711490057. The reversal of 1155711489979 is 9799841175511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155711489979 - 2¹⁵ = 1155711457211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155711489929) 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, 577855744989 + 577855744990.

It is an arithmetic number, because the mean of its divisors is an integer number (577855744990).

Almost surely, 2^{1155711489979} is an apocalyptic number.

1155711489979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155711489979 is an equidigital number, since it uses as much as digits as its factorization.

1155711489979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28576800, while the sum is 67.

The spelling of 1155711489979 in words is "one trillion, one hundred fifty-five billion, seven hundred eleven million, four hundred eighty-nine thousand, nine hundred seventy-nine".