1245311043545 has 8 divisors (see below), whose sum is σ = 1559346002496. Its totient is φ = 952933668016.

The previous prime is 1245311043533. The next prime is 1245311043577. The reversal of 1245311043545 is 5453401135421.

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-1245311043545 is a prime.

It is a super-3 number, since 3×1245311043545³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1245311043499 and 1245311043508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5414395727 + ... + 5414395956.

It is an arithmetic number, because the mean of its divisors is an integer number (194918250312).

Almost surely, 2^{1245311043545} is an apocalyptic number.

It is an amenable number.

1245311043545 is a deficient number, since it is larger than the sum of its proper divisors (314034958951).

1245311043545 is a wasteful number, since it uses less digits than its factorization.

1245311043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828791711.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 1245311043545 its reverse (5453401135421), we get a palindrome (6698712178966).

The spelling of 1245311043545 in words is "one trillion, two hundred forty-five billion, three hundred eleven million, forty-three thousand, five hundred forty-five".