1123406856827 has 2 divisors, whose sum is σ = 1123406856828. Its totient is φ = 1123406856826.

The previous prime is 1123406856823. The next prime is 1123406856829. The reversal of 1123406856827 is 7286586043211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123406856827 - 2² = 1123406856823 is a prime.

Together with 1123406856829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1123406856823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561703428413 + 561703428414.

It is an arithmetic number, because the mean of its divisors is an integer number (561703428414).

Almost surely, 2^{1123406856827} is an apocalyptic number.

1123406856827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123406856827 is an equidigital number, since it uses as much as digits as its factorization.

1123406856827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 1123406856827 in words is "one trillion, one hundred twenty-three billion, four hundred six million, eight hundred fifty-six thousand, eight hundred twenty-seven".