1045561434257 has 2 divisors, whose sum is σ = 1045561434258. Its totient is φ = 1045561434256.

The previous prime is 1045561434251. The next prime is 1045561434289. The reversal of 1045561434257 is 7524341655401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044383846401 + 1177587856 = 1021951^2 + 34316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045561434257 - 2¹² = 1045561430161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1045561434251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522780717128 + 522780717129.

It is an arithmetic number, because the mean of its divisors is an integer number (522780717129).

Almost surely, 2^{1045561434257} is an apocalyptic number.

It is an amenable number.

1045561434257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045561434257 is an equidigital number, since it uses as much as digits as its factorization.

1045561434257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 1045561434257 in words is "one trillion, forty-five billion, five hundred sixty-one million, four hundred thirty-four thousand, two hundred fifty-seven".