13412003515520 has 64 divisors (see below), whose sum is σ = 32087344744440. Its totient is φ = 5360739901440.

The previous prime is 13412003515517. The next prime is 13412003515529. The reversal of 13412003515520 is 2551530021431.

It can be written as a sum of positive squares in 4 ways, for example, as 10912240143424 + 2499763372096 = 3303368^2 + 1581064^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (13412003515529) 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, 7086527 + ... + 8777406.

Almost surely, 2^{13412003515520} is an apocalyptic number.

13412003515520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13412003515520 is an abundant number, since it is smaller than the sum of its proper divisors (18675341228920).

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

13412003515520 is a wasteful number, since it uses less digits than its factorization.

13412003515520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15865273 (or 15865261 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 13412003515520 its reverse (2551530021431), we get a palindrome (15963533536951).

The spelling of 13412003515520 in words is "thirteen trillion, four hundred twelve billion, three million, five hundred fifteen thousand, five hundred twenty".