1035043781641 has 2 divisors, whose sum is σ = 1035043781642. Its totient is φ = 1035043781640.

The previous prime is 1035043781609. The next prime is 1035043781647. The reversal of 1035043781641 is 1461873405301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001158335241 + 33885446400 = 1000579^2 + 184080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1035043781641 - 2⁵ = 1035043781609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1035043781647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517521890820 + 517521890821.

It is an arithmetic number, because the mean of its divisors is an integer number (517521890821).

Almost surely, 2^{1035043781641} is an apocalyptic number.

It is an amenable number.

1035043781641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1035043781641 is an equidigital number, since it uses as much as digits as its factorization.

1035043781641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 1035043781641 in words is "one trillion, thirty-five billion, forty-three million, seven hundred eighty-one thousand, six hundred forty-one".