1035236631661 has 2 divisors, whose sum is σ = 1035236631662. Its totient is φ = 1035236631660.

The previous prime is 1035236631641. The next prime is 1035236631677. The reversal of 1035236631661 is 1661366325301.

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., 841244833636 + 193991798025 = 917194^2 + 440445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1035236631661 - 2²⁹ = 1034699760749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1035236631631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517618315830 + 517618315831.

It is an arithmetic number, because the mean of its divisors is an integer number (517618315831).

Almost surely, 2^{1035236631661} is an apocalyptic number.

It is an amenable number.

1035236631661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1035236631661 is an equidigital number, since it uses as much as digits as its factorization.

1035236631661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 1035236631661 in words is "one trillion, thirty-five billion, two hundred thirty-six million, six hundred thirty-one thousand, six hundred sixty-one".