1003541491061 has 2 divisors, whose sum is σ = 1003541491062. Its totient is φ = 1003541491060.

The previous prime is 1003541491031. The next prime is 1003541491081. The reversal of 1003541491061 is 1601941453001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987767638225 + 15773852836 = 993865^2 + 125594^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003541491061 - 2²² = 1003537296757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003541491031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501770745530 + 501770745531.

It is an arithmetic number, because the mean of its divisors is an integer number (501770745531).

Almost surely, 2^{1003541491061} is an apocalyptic number.

It is an amenable number.

1003541491061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003541491061 is an equidigital number, since it uses as much as digits as its factorization.

1003541491061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 1003541491061 in words is "one trillion, three billion, five hundred forty-one million, four hundred ninety-one thousand, sixty-one".