8513120306243 has 6 divisors (see below), whose sum is σ = 9903017499156. Its totient is φ = 7296960262452.

The previous prime is 8513120306221. The next prime is 8513120306269. The reversal of 8513120306243 is 3426030213158.

It is not a de Polignac number, because 8513120306243 - 2¹⁴ = 8513120289859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8513120306197 and 8513120306206.

It is not an unprimeable number, because it can be changed into a prime (8513120306143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86868574505 + ... + 86868574602.

It is an arithmetic number, because the mean of its divisors is an integer number (1650502916526).

Almost surely, 2^{8513120306243} is an apocalyptic number.

8513120306243 is a deficient number, since it is larger than the sum of its proper divisors (1389897192913).

8513120306243 is a wasteful number, since it uses less digits than its factorization.

8513120306243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173737149121 (or 173737149114 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 8513120306243 in words is "eight trillion, five hundred thirteen billion, one hundred twenty million, three hundred six thousand, two hundred forty-three".