1123775050397 has 2 divisors, whose sum is σ = 1123775050398. Its totient is φ = 1123775050396.

The previous prime is 1123775050327. The next prime is 1123775050399. The reversal of 1123775050397 is 7930505773211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1069278015481 + 54497034916 = 1034059^2 + 233446^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123775050397 - 2²² = 1123770856093 is a prime.

Together with 1123775050399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123775050399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561887525198 + 561887525199.

It is an arithmetic number, because the mean of its divisors is an integer number (561887525199).

Almost surely, 2^{1123775050397} is an apocalyptic number.

It is an amenable number.

1123775050397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123775050397 is an equidigital number, since it uses as much as digits as its factorization.

1123775050397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1389150, while the sum is 50.

The spelling of 1123775050397 in words is "one trillion, one hundred twenty-three billion, seven hundred seventy-five million, fifty thousand, three hundred ninety-seven".