1111435566601 has 2 divisors, whose sum is σ = 1111435566602. Its totient is φ = 1111435566600.

The previous prime is 1111435566599. The next prime is 1111435566613. The reversal of 1111435566601 is 1066655341111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 975849598201 + 135585968400 = 987851^2 + 368220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111435566601 - 2¹ = 1111435566599 is a prime.

Together with 1111435566599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1111435566671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555717783300 + 555717783301.

It is an arithmetic number, because the mean of its divisors is an integer number (555717783301).

Almost surely, 2^{1111435566601} is an apocalyptic number.

It is an amenable number.

1111435566601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111435566601 is an equidigital number, since it uses as much as digits as its factorization.

1111435566601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 1111435566601 in words is "one trillion, one hundred eleven billion, four hundred thirty-five million, five hundred sixty-six thousand, six hundred one".