13215523542243 has 64 divisors (see below), whose sum is σ = 20503014658560. Its totient is φ = 7482841344000.

The previous prime is 13215523542227. The next prime is 13215523542251. The reversal of 13215523542243 is 34224532551231.

It is not a de Polignac number, because 13215523542243 - 2⁴ = 13215523542227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13215523542195 and 13215523542204.

It is not an unprimeable number, because it can be changed into a prime (13215523542223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 772061521 + ... + 772078637.

It is an arithmetic number, because the mean of its divisors is an integer number (320359604040).

Almost surely, 2^{13215523542243} is an apocalyptic number.

13215523542243 is a deficient number, since it is larger than the sum of its proper divisors (7287491116317).

13215523542243 is a wasteful number, since it uses less digits than its factorization.

13215523542243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27188.

The product of its digits is 864000, while the sum is 42.

The spelling of 13215523542243 in words is "thirteen trillion, two hundred fifteen billion, five hundred twenty-three million, five hundred forty-two thousand, two hundred forty-three".