1235045358661 has 2 divisors, whose sum is σ = 1235045358662. Its totient is φ = 1235045358660.

The previous prime is 1235045358653. The next prime is 1235045358667. The reversal of 1235045358661 is 1668535405321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1203474820900 + 31570537761 = 1097030^2 + 177681^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235045358661 - 2³ = 1235045358653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235045358667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617522679330 + 617522679331.

It is an arithmetic number, because the mean of its divisors is an integer number (617522679331).

Almost surely, 2^{1235045358661} is an apocalyptic number.

It is an amenable number.

1235045358661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235045358661 is an equidigital number, since it uses as much as digits as its factorization.

1235045358661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 1235045358661 in words is "one trillion, two hundred thirty-five billion, forty-five million, three hundred fifty-eight thousand, six hundred sixty-one".