1345523320545 has 16 divisors (see below), whose sum is σ = 2152852670592. Its totient is φ = 717607318400.

The previous prime is 1345523320507. The next prime is 1345523320553. The reversal of 1345523320545 is 5450233255431.

It is not a de Polignac number, because 1345523320545 - 2⁶ = 1345523320481 is a prime.

It is a super-2 number, since 2×1345523320545² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1345523320497 and 1345523320506.

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, 2894764 + ... + 3327266.

It is an arithmetic number, because the mean of its divisors is an integer number (134553291912).

Almost surely, 2^{1345523320545} is an apocalyptic number.

1345523320545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345523320545 is a deficient number, since it is larger than the sum of its proper divisors (807329350047).

1345523320545 is a wasteful number, since it uses less digits than its factorization.

1345523320545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639912.

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 1345523320545 its reverse (5450233255431), we get a palindrome (6795756575976).

The spelling of 1345523320545 in words is "one trillion, three hundred forty-five billion, five hundred twenty-three million, three hundred twenty thousand, five hundred forty-five".