1042566681337 has 2 divisors, whose sum is σ = 1042566681338. Its totient is φ = 1042566681336.

The previous prime is 1042566681271. The next prime is 1042566681347. The reversal of 1042566681337 is 7331866652401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690002680896 + 352564000441 = 830664^2 + 593771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042566681337 - 2³¹ = 1040419197689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042566681347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521283340668 + 521283340669.

It is an arithmetic number, because the mean of its divisors is an integer number (521283340669).

Almost surely, 2^{1042566681337} is an apocalyptic number.

It is an amenable number.

1042566681337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042566681337 is an equidigital number, since it uses as much as digits as its factorization.

1042566681337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 1042566681337 in words is "one trillion, forty-two billion, five hundred sixty-six million, six hundred eighty-one thousand, three hundred thirty-seven".