1123345555601 has 2 divisors, whose sum is σ = 1123345555602. Its totient is φ = 1123345555600.

The previous prime is 1123345555547. The next prime is 1123345555613. The reversal of 1123345555601 is 1065555433211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868801089025 + 254544466576 = 932095^2 + 504524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123345555601 - 2²² = 1123341361297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123345545601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561672777800 + 561672777801.

It is an arithmetic number, because the mean of its divisors is an integer number (561672777801).

Almost surely, 2^{1123345555601} is an apocalyptic number.

It is an amenable number.

1123345555601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123345555601 is an equidigital number, since it uses as much as digits as its factorization.

1123345555601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 1123345555601 in words is "one trillion, one hundred twenty-three billion, three hundred forty-five million, five hundred fifty-five thousand, six hundred one".