745326817685 has 16 divisors (see below), whose sum is σ = 912394180080. Its totient is φ = 584287941120.

The previous prime is 745326817637. The next prime is 745326817727. The reversal of 745326817685 is 586718623547.

It can be written as a sum of positive squares in 8 ways, for example, as 409374289 + 744917443396 = 20233^2 + 863086^2 .

It is not a de Polignac number, because 745326817685 - 2¹⁴ = 745326801301 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1523906 + ... + 1952675.

It is an arithmetic number, because the mean of its divisors is an integer number (57024636255).

Almost surely, 2^745326817685 is an apocalyptic number.

It is an amenable number.

745326817685 is a deficient number, since it is larger than the sum of its proper divisors (167067362395).

745326817685 is a wasteful number, since it uses less digits than its factorization.

745326817685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477448.

The product of its digits is 67737600, while the sum is 62.

The spelling of 745326817685 in words is "seven hundred forty-five billion, three hundred twenty-six million, eight hundred seventeen thousand, six hundred eighty-five".