13530122520 has 64 divisors (see below), whose sum is σ = 42978042720. Its totient is φ = 3395794944.

The previous prime is 13530122497. The next prime is 13530122533. The reversal of 13530122520 is 2522103531.

It is a happy number.

It is a super-2 number, since 2×13530122520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3314167 + ... + 3318246.

Almost surely, 2^13530122520 is an apocalyptic number.

13530122520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13530122520 is an abundant number, since it is smaller than the sum of its proper divisors (29447920200).

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

13530122520 is a wasteful number, since it uses less digits than its factorization.

13530122520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632444 (or 6632440 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 13530122520 in words is "thirteen billion, five hundred thirty million, one hundred twenty-two thousand, five hundred twenty".