13535496520 has 128 divisors (see below), whose sum is σ = 38692362240. Its totient is φ = 4145541120.

The previous prime is 13535496463. The next prime is 13535496523. The reversal of 13535496520 is 2569453531.

It is a super-2 number, since 2×13535496520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13535496523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52864 + ... + 172816.

It is an arithmetic number, because the mean of its divisors is an integer number (302284080).

Almost surely, 2^13535496520 is an apocalyptic number.

13535496520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13535496520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19346181120).

13535496520 is an abundant number, since it is smaller than the sum of its proper divisors (25156865720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13535496520 is a wasteful number, since it uses less digits than its factorization.

13535496520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120015 (or 120011 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 13535496520 in words is "thirteen billion, five hundred thirty-five million, four hundred ninety-six thousand, five hundred twenty".