1123854462721 has 2 divisors, whose sum is σ = 1123854462722. Its totient is φ = 1123854462720.

The previous prime is 1123854462683. The next prime is 1123854462751. The reversal of 1123854462721 is 1272644583211.

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., 1122116490000 + 1737972721 = 1059300^2 + 41689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123854462721 - 2³⁷ = 986415509249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123854462751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561927231360 + 561927231361.

It is an arithmetic number, because the mean of its divisors is an integer number (561927231361).

Almost surely, 2^{1123854462721} is an apocalyptic number.

It is an amenable number.

1123854462721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123854462721 is an equidigital number, since it uses as much as digits as its factorization.

1123854462721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 46.

The spelling of 1123854462721 in words is "one trillion, one hundred twenty-three billion, eight hundred fifty-four million, four hundred sixty-two thousand, seven hundred twenty-one".