1745317773545 has 32 divisors (see below), whose sum is σ = 2222567198496. Its totient is φ = 1311168102400.

The previous prime is 1745317773541. The next prime is 1745317773581. The reversal of 1745317773545 is 5453777135471.

It can be written as a sum of positive squares in 16 ways, for example, as 593782748329 + 1151535025216 = 770573^2 + 1073096^2 .

It is not a de Polignac number, because 1745317773545 - 2² = 1745317773541 is a prime.

It is a super-2 number, since 2×1745317773545² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1745317773541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215973905 + ... + 215981985.

It is an arithmetic number, because the mean of its divisors is an integer number (69455224953).

Almost surely, 2^{1745317773545} is an apocalyptic number.

It is an amenable number.

1745317773545 is a deficient number, since it is larger than the sum of its proper divisors (477249424951).

1745317773545 is a wasteful number, since it uses less digits than its factorization.

1745317773545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13501.

The product of its digits is 43218000, while the sum is 59.

The spelling of 1745317773545 in words is "one trillion, seven hundred forty-five billion, three hundred seventeen million, seven hundred seventy-three thousand, five hundred forty-five".