545312505213545 has 8 divisors (see below), whose sum is σ = 658542999927624. Its totient is φ = 433471341723264.

The previous prime is 545312505213521. The next prime is 545312505213557.

545312505213545 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 2199920803369 + 543112584410176 = 1483213^2 + 23304776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545312505213545 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545312505213493 and 545312505213502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347332805084 + ... + 347332806653.

It is an arithmetic number, because the mean of its divisors is an integer number (82317874990953).

Almost surely, 2^{545312505213545} is an apocalyptic number.

It is an amenable number.

545312505213545 is a deficient number, since it is larger than the sum of its proper divisors (113230494714079).

545312505213545 is a wasteful number, since it uses less digits than its factorization.

545312505213545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694665611899.

The product of its (nonzero) digits is 9000000, while the sum is 50.

It can be divided in two parts, 54531250 and 5213545, that added together give a palindrome (59744795).

The spelling of 545312505213545 in words is "five hundred forty-five trillion, three hundred twelve billion, five hundred five million, two hundred thirteen thousand, five hundred forty-five".