1556325535741 has 2 divisors, whose sum is σ = 1556325535742. Its totient is φ = 1556325535740.

The previous prime is 1556325535673. The next prime is 1556325535801. The reversal of 1556325535741 is 1475355236551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903859011225 + 652466524516 = 950715^2 + 807754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1556325535741 - 2¹⁹ = 1556325011453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1556325535241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778162767870 + 778162767871.

It is an arithmetic number, because the mean of its divisors is an integer number (778162767871).

Almost surely, 2^{1556325535741} is an apocalyptic number.

It is an amenable number.

1556325535741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1556325535741 is an equidigital number, since it uses as much as digits as its factorization.

1556325535741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450000, while the sum is 52.

The spelling of 1556325535741 in words is "one trillion, five hundred fifty-six billion, three hundred twenty-five million, five hundred thirty-five thousand, seven hundred forty-one".