13345353532520 has 16 divisors (see below), whose sum is σ = 30027045448260. Its totient is φ = 5338141412992.

The previous prime is 13345353532457. The next prime is 13345353532619. The reversal of 13345353532520 is 2523535354331.

It can be written as a sum of positive squares in 2 ways, for example, as 13105572906244 + 239780626276 = 3620162^2 + 489674^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166816919117 + ... + 166816919196.

Almost surely, 2^{13345353532520} is an apocalyptic number.

13345353532520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13345353532520 is an abundant number, since it is smaller than the sum of its proper divisors (16681691915740).

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

13345353532520 is a wasteful number, since it uses less digits than its factorization.

13345353532520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333633838324 (or 333633838320 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 44.

Adding to 13345353532520 its reverse (2523535354331), we get a palindrome (15868888886851).

The spelling of 13345353532520 in words is "thirteen trillion, three hundred forty-five billion, three hundred fifty-three million, five hundred thirty-two thousand, five hundred twenty".