1311503050545 has 8 divisors (see below), whose sum is σ = 2098404880896. Its totient is φ = 699468293616.

The previous prime is 1311503050537. The next prime is 1311503050547. The reversal of 1311503050545 is 5450503051131.

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

It is not a de Polignac number, because 1311503050545 - 2³ = 1311503050537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311503050547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43716768337 + ... + 43716768366.

It is an arithmetic number, because the mean of its divisors is an integer number (262300610112).

Almost surely, 2^{1311503050545} is an apocalyptic number.

1311503050545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311503050545 is a deficient number, since it is larger than the sum of its proper divisors (786901830351).

1311503050545 is an equidigital number, since it uses as much as digits as its factorization.

1311503050545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87433536711.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 1311503050545 in words is "one trillion, three hundred eleven billion, five hundred three million, fifty thousand, five hundred forty-five".