13530520817 has 8 divisors (see below), whose sum is σ = 14785720992. Its totient is φ = 12279512800.

The previous prime is 13530520789. The next prime is 13530520831. The reversal of 13530520817 is 71802503531.

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

It is a cyclic number.

It is not a de Polignac number, because 13530520817 - 2⁸ = 13530520561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530520867) 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, 1041284 + ... + 1054197.

It is an arithmetic number, because the mean of its divisors is an integer number (1848215124).

Almost surely, 2^13530520817 is an apocalyptic number.

It is an amenable number.

13530520817 is a deficient number, since it is larger than the sum of its proper divisors (1255200175).

13530520817 is a wasteful number, since it uses less digits than its factorization.

13530520817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096079.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 13530520817 in words is "thirteen billion, five hundred thirty million, five hundred twenty thousand, eight hundred seventeen".