1155911883739 has 2 divisors, whose sum is σ = 1155911883740. Its totient is φ = 1155911883738.

The previous prime is 1155911883661. The next prime is 1155911883793. The reversal of 1155911883739 is 9373881195511.

Together with next prime (1155911883793) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1155911883739 is a prime.

It is a super-3 number, since 3×1155911883739³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1155911883239) 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, 577955941869 + 577955941870.

It is an arithmetic number, because the mean of its divisors is an integer number (577955941870).

Almost surely, 2^{1155911883739} is an apocalyptic number.

1155911883739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155911883739 is an equidigital number, since it uses as much as digits as its factorization.

1155911883739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 61.

The spelling of 1155911883739 in words is "one trillion, one hundred fifty-five billion, nine hundred eleven million, eight hundred eighty-three thousand, seven hundred thirty-nine".