1125319977791 has 2 divisors, whose sum is σ = 1125319977792. Its totient is φ = 1125319977790.

The previous prime is 1125319977767. The next prime is 1125319977823. The reversal of 1125319977791 is 1977799135211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1977799135211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125319977791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125319977191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562659988895 + 562659988896.

It is an arithmetic number, because the mean of its divisors is an integer number (562659988896).

Almost surely, 2^{1125319977791} is an apocalyptic number.

1125319977791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125319977791 is an equidigital number, since it uses as much as digits as its factorization.

1125319977791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7501410, while the sum is 62.

The spelling of 1125319977791 in words is "one trillion, one hundred twenty-five billion, three hundred nineteen million, nine hundred seventy-seven thousand, seven hundred ninety-one".