13445540531520 has 112 divisors (see below), whose sum is σ = 44066674871808. Its totient is φ = 3469816903680.

The previous prime is 13445540531473. The next prime is 13445540531593. The reversal of 13445540531520 is 2513504554431.

It is a super-2 number, since 2×13445540531520² (a number of 27 digits) contains 22 as substring.

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, 225869779 + ... + 225929298.

Almost surely, 2^{13445540531520} is an apocalyptic number.

13445540531520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13445540531520 is an abundant number, since it is smaller than the sum of its proper divisors (30621134340288).

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

13445540531520 is a wasteful number, since it uses less digits than its factorization.

13445540531520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451799128 (or 451799118 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 13445540531520 in words is "thirteen trillion, four hundred forty-five billion, five hundred forty million, five hundred thirty-one thousand, five hundred twenty".