1745074505861 has 2 divisors, whose sum is σ = 1745074505862. Its totient is φ = 1745074505860.

The previous prime is 1745074505851. The next prime is 1745074505947. The reversal of 1745074505861 is 1685054705471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1158271012900 + 586803492961 = 1076230^2 + 766031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1745074505861 - 2²² = 1745070311557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1745074505851) 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, 872537252930 + 872537252931.

It is an arithmetic number, because the mean of its divisors is an integer number (872537252931).

Almost surely, 2^{1745074505861} is an apocalyptic number.

It is an amenable number.

1745074505861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745074505861 is an equidigital number, since it uses as much as digits as its factorization.

1745074505861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704000, while the sum is 53.

The spelling of 1745074505861 in words is "one trillion, seven hundred forty-five billion, seventy-four million, five hundred five thousand, eight hundred sixty-one".