13520351217 has 8 divisors (see below), whose sum is σ = 18028086624. Its totient is φ = 9013091648.

The previous prime is 13520351167. The next prime is 13520351267. The reversal of 13520351217 is 71215302531.

It is an interprime number because it is at equal distance from previous prime (13520351167) and next prime (13520351267).

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 13520351217 - 2¹² = 13520347121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13520351267) 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, 46323 + ... + 170840.

It is an arithmetic number, because the mean of its divisors is an integer number (2253510828).

Almost surely, 2^13520351217 is an apocalyptic number.

It is an amenable number.

13520351217 is a deficient number, since it is larger than the sum of its proper divisors (4507735407).

13520351217 is a wasteful number, since it uses less digits than its factorization.

13520351217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237919.

The product of its (nonzero) digits is 6300, while the sum is 30.

Adding to 13520351217 its reverse (71215302531), we get a palindrome (84735653748).

The spelling of 13520351217 in words is "thirteen billion, five hundred twenty million, three hundred fifty-one thousand, two hundred seventeen".