13520235255 has 16 divisors (see below), whose sum is σ = 21637010304. Its totient is φ = 7209247520.

The previous prime is 13520235247. The next prime is 13520235259. The reversal of 13520235255 is 55253202531.

It is not a de Polignac number, because 13520235255 - 2³ = 13520235247 is a prime.

It is a super-2 number, since 2×13520235255² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520235259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22341 + ... + 165950.

It is an arithmetic number, because the mean of its divisors is an integer number (1352313144).

Almost surely, 2^13520235255 is an apocalyptic number.

13520235255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13520235255 is a deficient number, since it is larger than the sum of its proper divisors (8116775049).

13520235255 is a wasteful number, since it uses less digits than its factorization.

13520235255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193086.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 13520235255 its reverse (55253202531), we get a palindrome (68773437786).

The spelling of 13520235255 in words is "thirteen billion, five hundred twenty million, two hundred thirty-five thousand, two hundred fifty-five".